2b4e975770f3a950d982f4f084d4ff81f8c94301
[linux-2.6.git] / drivers / net / r8169.c
1 /*
2  * r8169.c: RealTek 8169/8168/8101 ethernet driver.
3  *
4  * Copyright (c) 2002 ShuChen <shuchen@realtek.com.tw>
5  * Copyright (c) 2003 - 2007 Francois Romieu <romieu@fr.zoreil.com>
6  * Copyright (c) a lot of people too. Please respect their work.
7  *
8  * See MAINTAINERS file for support contact information.
9  */
10
11 #include <linux/module.h>
12 #include <linux/moduleparam.h>
13 #include <linux/pci.h>
14 #include <linux/netdevice.h>
15 #include <linux/etherdevice.h>
16 #include <linux/delay.h>
17 #include <linux/ethtool.h>
18 #include <linux/mii.h>
19 #include <linux/if_vlan.h>
20 #include <linux/crc32.h>
21 #include <linux/in.h>
22 #include <linux/ip.h>
23 #include <linux/tcp.h>
24 #include <linux/init.h>
25 #include <linux/dma-mapping.h>
26
27 #include <asm/system.h>
28 #include <asm/io.h>
29 #include <asm/irq.h>
30
31 #define RTL8169_VERSION "2.3LK-NAPI"
32 #define MODULENAME "r8169"
33 #define PFX MODULENAME ": "
34
35 #ifdef RTL8169_DEBUG
36 #define assert(expr) \
37         if (!(expr)) {                                  \
38                 printk( "Assertion failed! %s,%s,%s,line=%d\n", \
39                 #expr,__FILE__,__func__,__LINE__);              \
40         }
41 #define dprintk(fmt, args...) \
42         do { printk(KERN_DEBUG PFX fmt, ## args); } while (0)
43 #else
44 #define assert(expr) do {} while (0)
45 #define dprintk(fmt, args...)   do {} while (0)
46 #endif /* RTL8169_DEBUG */
47
48 #define R8169_MSG_DEFAULT \
49         (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_IFUP | NETIF_MSG_IFDOWN)
50
51 #define TX_BUFFS_AVAIL(tp) \
52         (tp->dirty_tx + NUM_TX_DESC - tp->cur_tx - 1)
53
54 /* Maximum events (Rx packets, etc.) to handle at each interrupt. */
55 static const int max_interrupt_work = 20;
56
57 /* Maximum number of multicast addresses to filter (vs. Rx-all-multicast).
58    The RTL chips use a 64 element hash table based on the Ethernet CRC. */
59 static const int multicast_filter_limit = 32;
60
61 /* MAC address length */
62 #define MAC_ADDR_LEN    6
63
64 #define MAX_READ_REQUEST_SHIFT  12
65 #define RX_FIFO_THRESH  7       /* 7 means NO threshold, Rx buffer level before first PCI xfer. */
66 #define RX_DMA_BURST    6       /* Maximum PCI burst, '6' is 1024 */
67 #define TX_DMA_BURST    6       /* Maximum PCI burst, '6' is 1024 */
68 #define EarlyTxThld     0x3F    /* 0x3F means NO early transmit */
69 #define RxPacketMaxSize 0x3FE8  /* 16K - 1 - ETH_HLEN - VLAN - CRC... */
70 #define SafeMtu         0x1c20  /* ... actually life sucks beyond ~7k */
71 #define InterFrameGap   0x03    /* 3 means InterFrameGap = the shortest one */
72
73 #define R8169_REGS_SIZE         256
74 #define R8169_NAPI_WEIGHT       64
75 #define NUM_TX_DESC     64      /* Number of Tx descriptor registers */
76 #define NUM_RX_DESC     256     /* Number of Rx descriptor registers */
77 #define RX_BUF_SIZE     1536    /* Rx Buffer size */
78 #define R8169_TX_RING_BYTES     (NUM_TX_DESC * sizeof(struct TxDesc))
79 #define R8169_RX_RING_BYTES     (NUM_RX_DESC * sizeof(struct RxDesc))
80
81 #define RTL8169_TX_TIMEOUT      (6*HZ)
82 #define RTL8169_PHY_TIMEOUT     (10*HZ)
83
84 #define RTL_EEPROM_SIG          cpu_to_le32(0x8129)
85 #define RTL_EEPROM_SIG_MASK     cpu_to_le32(0xffff)
86 #define RTL_EEPROM_SIG_ADDR     0x0000
87
88 /* write/read MMIO register */
89 #define RTL_W8(reg, val8)       writeb ((val8), ioaddr + (reg))
90 #define RTL_W16(reg, val16)     writew ((val16), ioaddr + (reg))
91 #define RTL_W32(reg, val32)     writel ((val32), ioaddr + (reg))
92 #define RTL_R8(reg)             readb (ioaddr + (reg))
93 #define RTL_R16(reg)            readw (ioaddr + (reg))
94 #define RTL_R32(reg)            ((unsigned long) readl (ioaddr + (reg)))
95
96 enum mac_version {
97         RTL_GIGA_MAC_VER_01 = 0x01, // 8169
98         RTL_GIGA_MAC_VER_02 = 0x02, // 8169S
99         RTL_GIGA_MAC_VER_03 = 0x03, // 8110S
100         RTL_GIGA_MAC_VER_04 = 0x04, // 8169SB
101         RTL_GIGA_MAC_VER_05 = 0x05, // 8110SCd
102         RTL_GIGA_MAC_VER_06 = 0x06, // 8110SCe
103         RTL_GIGA_MAC_VER_07 = 0x07, // 8102e
104         RTL_GIGA_MAC_VER_08 = 0x08, // 8102e
105         RTL_GIGA_MAC_VER_09 = 0x09, // 8102e
106         RTL_GIGA_MAC_VER_10 = 0x0a, // 8101e
107         RTL_GIGA_MAC_VER_11 = 0x0b, // 8168Bb
108         RTL_GIGA_MAC_VER_12 = 0x0c, // 8168Be
109         RTL_GIGA_MAC_VER_13 = 0x0d, // 8101Eb
110         RTL_GIGA_MAC_VER_14 = 0x0e, // 8101 ?
111         RTL_GIGA_MAC_VER_15 = 0x0f, // 8101 ?
112         RTL_GIGA_MAC_VER_16 = 0x11, // 8101Ec
113         RTL_GIGA_MAC_VER_17 = 0x10, // 8168Bf
114         RTL_GIGA_MAC_VER_18 = 0x12, // 8168CP
115         RTL_GIGA_MAC_VER_19 = 0x13, // 8168C
116         RTL_GIGA_MAC_VER_20 = 0x14, // 8168C
117         RTL_GIGA_MAC_VER_21 = 0x15, // 8168C
118         RTL_GIGA_MAC_VER_22 = 0x16, // 8168C
119         RTL_GIGA_MAC_VER_23 = 0x17, // 8168CP
120         RTL_GIGA_MAC_VER_24 = 0x18, // 8168CP
121         RTL_GIGA_MAC_VER_25 = 0x19  // 8168D
122 };
123
124 #define _R(NAME,MAC,MASK) \
125         { .name = NAME, .mac_version = MAC, .RxConfigMask = MASK }
126
127 static const struct {
128         const char *name;
129         u8 mac_version;
130         u32 RxConfigMask;       /* Clears the bits supported by this chip */
131 } rtl_chip_info[] = {
132         _R("RTL8169",           RTL_GIGA_MAC_VER_01, 0xff7e1880), // 8169
133         _R("RTL8169s",          RTL_GIGA_MAC_VER_02, 0xff7e1880), // 8169S
134         _R("RTL8110s",          RTL_GIGA_MAC_VER_03, 0xff7e1880), // 8110S
135         _R("RTL8169sb/8110sb",  RTL_GIGA_MAC_VER_04, 0xff7e1880), // 8169SB
136         _R("RTL8169sc/8110sc",  RTL_GIGA_MAC_VER_05, 0xff7e1880), // 8110SCd
137         _R("RTL8169sc/8110sc",  RTL_GIGA_MAC_VER_06, 0xff7e1880), // 8110SCe
138         _R("RTL8102e",          RTL_GIGA_MAC_VER_07, 0xff7e1880), // PCI-E
139         _R("RTL8102e",          RTL_GIGA_MAC_VER_08, 0xff7e1880), // PCI-E
140         _R("RTL8102e",          RTL_GIGA_MAC_VER_09, 0xff7e1880), // PCI-E
141         _R("RTL8101e",          RTL_GIGA_MAC_VER_10, 0xff7e1880), // PCI-E
142         _R("RTL8168b/8111b",    RTL_GIGA_MAC_VER_11, 0xff7e1880), // PCI-E
143         _R("RTL8168b/8111b",    RTL_GIGA_MAC_VER_12, 0xff7e1880), // PCI-E
144         _R("RTL8101e",          RTL_GIGA_MAC_VER_13, 0xff7e1880), // PCI-E 8139
145         _R("RTL8100e",          RTL_GIGA_MAC_VER_14, 0xff7e1880), // PCI-E 8139
146         _R("RTL8100e",          RTL_GIGA_MAC_VER_15, 0xff7e1880), // PCI-E 8139
147         _R("RTL8168b/8111b",    RTL_GIGA_MAC_VER_17, 0xff7e1880), // PCI-E
148         _R("RTL8101e",          RTL_GIGA_MAC_VER_16, 0xff7e1880), // PCI-E
149         _R("RTL8168cp/8111cp",  RTL_GIGA_MAC_VER_18, 0xff7e1880), // PCI-E
150         _R("RTL8168c/8111c",    RTL_GIGA_MAC_VER_19, 0xff7e1880), // PCI-E
151         _R("RTL8168c/8111c",    RTL_GIGA_MAC_VER_20, 0xff7e1880), // PCI-E
152         _R("RTL8168c/8111c",    RTL_GIGA_MAC_VER_21, 0xff7e1880), // PCI-E
153         _R("RTL8168c/8111c",    RTL_GIGA_MAC_VER_22, 0xff7e1880), // PCI-E
154         _R("RTL8168cp/8111cp",  RTL_GIGA_MAC_VER_23, 0xff7e1880), // PCI-E
155         _R("RTL8168cp/8111cp",  RTL_GIGA_MAC_VER_24, 0xff7e1880), // PCI-E
156         _R("RTL8168d/8111d",    RTL_GIGA_MAC_VER_25, 0xff7e1880)  // PCI-E
157 };
158 #undef _R
159
160 enum cfg_version {
161         RTL_CFG_0 = 0x00,
162         RTL_CFG_1,
163         RTL_CFG_2
164 };
165
166 static void rtl_hw_start_8169(struct net_device *);
167 static void rtl_hw_start_8168(struct net_device *);
168 static void rtl_hw_start_8101(struct net_device *);
169
170 static struct pci_device_id rtl8169_pci_tbl[] = {
171         { PCI_DEVICE(PCI_VENDOR_ID_REALTEK,     0x8129), 0, 0, RTL_CFG_0 },
172         { PCI_DEVICE(PCI_VENDOR_ID_REALTEK,     0x8136), 0, 0, RTL_CFG_2 },
173         { PCI_DEVICE(PCI_VENDOR_ID_REALTEK,     0x8167), 0, 0, RTL_CFG_0 },
174         { PCI_DEVICE(PCI_VENDOR_ID_REALTEK,     0x8168), 0, 0, RTL_CFG_1 },
175         { PCI_DEVICE(PCI_VENDOR_ID_REALTEK,     0x8169), 0, 0, RTL_CFG_0 },
176         { PCI_DEVICE(PCI_VENDOR_ID_DLINK,       0x4300), 0, 0, RTL_CFG_0 },
177         { PCI_DEVICE(PCI_VENDOR_ID_AT,          0xc107), 0, 0, RTL_CFG_0 },
178         { PCI_DEVICE(0x16ec,                    0x0116), 0, 0, RTL_CFG_0 },
179         { PCI_VENDOR_ID_LINKSYS,                0x1032,
180                 PCI_ANY_ID, 0x0024, 0, 0, RTL_CFG_0 },
181         { 0x0001,                               0x8168,
182                 PCI_ANY_ID, 0x2410, 0, 0, RTL_CFG_2 },
183         {0,},
184 };
185
186 MODULE_DEVICE_TABLE(pci, rtl8169_pci_tbl);
187
188 static int rx_copybreak = 200;
189 static int use_dac;
190 static struct {
191         u32 msg_enable;
192 } debug = { -1 };
193
194 enum rtl_registers {
195         MAC0            = 0,    /* Ethernet hardware address. */
196         MAC4            = 4,
197         MAR0            = 8,    /* Multicast filter. */
198         CounterAddrLow          = 0x10,
199         CounterAddrHigh         = 0x14,
200         TxDescStartAddrLow      = 0x20,
201         TxDescStartAddrHigh     = 0x24,
202         TxHDescStartAddrLow     = 0x28,
203         TxHDescStartAddrHigh    = 0x2c,
204         FLASH           = 0x30,
205         ERSR            = 0x36,
206         ChipCmd         = 0x37,
207         TxPoll          = 0x38,
208         IntrMask        = 0x3c,
209         IntrStatus      = 0x3e,
210         TxConfig        = 0x40,
211         RxConfig        = 0x44,
212         RxMissed        = 0x4c,
213         Cfg9346         = 0x50,
214         Config0         = 0x51,
215         Config1         = 0x52,
216         Config2         = 0x53,
217         Config3         = 0x54,
218         Config4         = 0x55,
219         Config5         = 0x56,
220         MultiIntr       = 0x5c,
221         PHYAR           = 0x60,
222         PHYstatus       = 0x6c,
223         RxMaxSize       = 0xda,
224         CPlusCmd        = 0xe0,
225         IntrMitigate    = 0xe2,
226         RxDescAddrLow   = 0xe4,
227         RxDescAddrHigh  = 0xe8,
228         EarlyTxThres    = 0xec,
229         FuncEvent       = 0xf0,
230         FuncEventMask   = 0xf4,
231         FuncPresetState = 0xf8,
232         FuncForceEvent  = 0xfc,
233 };
234
235 enum rtl8110_registers {
236         TBICSR                  = 0x64,
237         TBI_ANAR                = 0x68,
238         TBI_LPAR                = 0x6a,
239 };
240
241 enum rtl8168_8101_registers {
242         CSIDR                   = 0x64,
243         CSIAR                   = 0x68,
244 #define CSIAR_FLAG                      0x80000000
245 #define CSIAR_WRITE_CMD                 0x80000000
246 #define CSIAR_BYTE_ENABLE               0x0f
247 #define CSIAR_BYTE_ENABLE_SHIFT         12
248 #define CSIAR_ADDR_MASK                 0x0fff
249
250         EPHYAR                  = 0x80,
251 #define EPHYAR_FLAG                     0x80000000
252 #define EPHYAR_WRITE_CMD                0x80000000
253 #define EPHYAR_REG_MASK                 0x1f
254 #define EPHYAR_REG_SHIFT                16
255 #define EPHYAR_DATA_MASK                0xffff
256         DBG_REG                 = 0xd1,
257 #define FIX_NAK_1                       (1 << 4)
258 #define FIX_NAK_2                       (1 << 3)
259 };
260
261 enum rtl_register_content {
262         /* InterruptStatusBits */
263         SYSErr          = 0x8000,
264         PCSTimeout      = 0x4000,
265         SWInt           = 0x0100,
266         TxDescUnavail   = 0x0080,
267         RxFIFOOver      = 0x0040,
268         LinkChg         = 0x0020,
269         RxOverflow      = 0x0010,
270         TxErr           = 0x0008,
271         TxOK            = 0x0004,
272         RxErr           = 0x0002,
273         RxOK            = 0x0001,
274
275         /* RxStatusDesc */
276         RxFOVF  = (1 << 23),
277         RxRWT   = (1 << 22),
278         RxRES   = (1 << 21),
279         RxRUNT  = (1 << 20),
280         RxCRC   = (1 << 19),
281
282         /* ChipCmdBits */
283         CmdReset        = 0x10,
284         CmdRxEnb        = 0x08,
285         CmdTxEnb        = 0x04,
286         RxBufEmpty      = 0x01,
287
288         /* TXPoll register p.5 */
289         HPQ             = 0x80,         /* Poll cmd on the high prio queue */
290         NPQ             = 0x40,         /* Poll cmd on the low prio queue */
291         FSWInt          = 0x01,         /* Forced software interrupt */
292
293         /* Cfg9346Bits */
294         Cfg9346_Lock    = 0x00,
295         Cfg9346_Unlock  = 0xc0,
296
297         /* rx_mode_bits */
298         AcceptErr       = 0x20,
299         AcceptRunt      = 0x10,
300         AcceptBroadcast = 0x08,
301         AcceptMulticast = 0x04,
302         AcceptMyPhys    = 0x02,
303         AcceptAllPhys   = 0x01,
304
305         /* RxConfigBits */
306         RxCfgFIFOShift  = 13,
307         RxCfgDMAShift   =  8,
308
309         /* TxConfigBits */
310         TxInterFrameGapShift = 24,
311         TxDMAShift = 8, /* DMA burst value (0-7) is shift this many bits */
312
313         /* Config1 register p.24 */
314         LEDS1           = (1 << 7),
315         LEDS0           = (1 << 6),
316         MSIEnable       = (1 << 5),     /* Enable Message Signaled Interrupt */
317         Speed_down      = (1 << 4),
318         MEMMAP          = (1 << 3),
319         IOMAP           = (1 << 2),
320         VPD             = (1 << 1),
321         PMEnable        = (1 << 0),     /* Power Management Enable */
322
323         /* Config2 register p. 25 */
324         PCI_Clock_66MHz = 0x01,
325         PCI_Clock_33MHz = 0x00,
326
327         /* Config3 register p.25 */
328         MagicPacket     = (1 << 5),     /* Wake up when receives a Magic Packet */
329         LinkUp          = (1 << 4),     /* Wake up when the cable connection is re-established */
330         Beacon_en       = (1 << 0),     /* 8168 only. Reserved in the 8168b */
331
332         /* Config5 register p.27 */
333         BWF             = (1 << 6),     /* Accept Broadcast wakeup frame */
334         MWF             = (1 << 5),     /* Accept Multicast wakeup frame */
335         UWF             = (1 << 4),     /* Accept Unicast wakeup frame */
336         LanWake         = (1 << 1),     /* LanWake enable/disable */
337         PMEStatus       = (1 << 0),     /* PME status can be reset by PCI RST# */
338
339         /* TBICSR p.28 */
340         TBIReset        = 0x80000000,
341         TBILoopback     = 0x40000000,
342         TBINwEnable     = 0x20000000,
343         TBINwRestart    = 0x10000000,
344         TBILinkOk       = 0x02000000,
345         TBINwComplete   = 0x01000000,
346
347         /* CPlusCmd p.31 */
348         EnableBist      = (1 << 15),    // 8168 8101
349         Mac_dbgo_oe     = (1 << 14),    // 8168 8101
350         Normal_mode     = (1 << 13),    // unused
351         Force_half_dup  = (1 << 12),    // 8168 8101
352         Force_rxflow_en = (1 << 11),    // 8168 8101
353         Force_txflow_en = (1 << 10),    // 8168 8101
354         Cxpl_dbg_sel    = (1 << 9),     // 8168 8101
355         ASF             = (1 << 8),     // 8168 8101
356         PktCntrDisable  = (1 << 7),     // 8168 8101
357         Mac_dbgo_sel    = 0x001c,       // 8168
358         RxVlan          = (1 << 6),
359         RxChkSum        = (1 << 5),
360         PCIDAC          = (1 << 4),
361         PCIMulRW        = (1 << 3),
362         INTT_0          = 0x0000,       // 8168
363         INTT_1          = 0x0001,       // 8168
364         INTT_2          = 0x0002,       // 8168
365         INTT_3          = 0x0003,       // 8168
366
367         /* rtl8169_PHYstatus */
368         TBI_Enable      = 0x80,
369         TxFlowCtrl      = 0x40,
370         RxFlowCtrl      = 0x20,
371         _1000bpsF       = 0x10,
372         _100bps         = 0x08,
373         _10bps          = 0x04,
374         LinkStatus      = 0x02,
375         FullDup         = 0x01,
376
377         /* _TBICSRBit */
378         TBILinkOK       = 0x02000000,
379
380         /* DumpCounterCommand */
381         CounterDump     = 0x8,
382 };
383
384 enum desc_status_bit {
385         DescOwn         = (1 << 31), /* Descriptor is owned by NIC */
386         RingEnd         = (1 << 30), /* End of descriptor ring */
387         FirstFrag       = (1 << 29), /* First segment of a packet */
388         LastFrag        = (1 << 28), /* Final segment of a packet */
389
390         /* Tx private */
391         LargeSend       = (1 << 27), /* TCP Large Send Offload (TSO) */
392         MSSShift        = 16,        /* MSS value position */
393         MSSMask         = 0xfff,     /* MSS value + LargeSend bit: 12 bits */
394         IPCS            = (1 << 18), /* Calculate IP checksum */
395         UDPCS           = (1 << 17), /* Calculate UDP/IP checksum */
396         TCPCS           = (1 << 16), /* Calculate TCP/IP checksum */
397         TxVlanTag       = (1 << 17), /* Add VLAN tag */
398
399         /* Rx private */
400         PID1            = (1 << 18), /* Protocol ID bit 1/2 */
401         PID0            = (1 << 17), /* Protocol ID bit 2/2 */
402
403 #define RxProtoUDP      (PID1)
404 #define RxProtoTCP      (PID0)
405 #define RxProtoIP       (PID1 | PID0)
406 #define RxProtoMask     RxProtoIP
407
408         IPFail          = (1 << 16), /* IP checksum failed */
409         UDPFail         = (1 << 15), /* UDP/IP checksum failed */
410         TCPFail         = (1 << 14), /* TCP/IP checksum failed */
411         RxVlanTag       = (1 << 16), /* VLAN tag available */
412 };
413
414 #define RsvdMask        0x3fffc000
415
416 struct TxDesc {
417         __le32 opts1;
418         __le32 opts2;
419         __le64 addr;
420 };
421
422 struct RxDesc {
423         __le32 opts1;
424         __le32 opts2;
425         __le64 addr;
426 };
427
428 struct ring_info {
429         struct sk_buff  *skb;
430         u32             len;
431         u8              __pad[sizeof(void *) - sizeof(u32)];
432 };
433
434 enum features {
435         RTL_FEATURE_WOL         = (1 << 0),
436         RTL_FEATURE_MSI         = (1 << 1),
437         RTL_FEATURE_GMII        = (1 << 2),
438 };
439
440 struct rtl8169_private {
441         void __iomem *mmio_addr;        /* memory map physical address */
442         struct pci_dev *pci_dev;        /* Index of PCI device */
443         struct net_device *dev;
444         struct napi_struct napi;
445         spinlock_t lock;                /* spin lock flag */
446         u32 msg_enable;
447         int chipset;
448         int mac_version;
449         u32 cur_rx; /* Index into the Rx descriptor buffer of next Rx pkt. */
450         u32 cur_tx; /* Index into the Tx descriptor buffer of next Rx pkt. */
451         u32 dirty_rx;
452         u32 dirty_tx;
453         struct TxDesc *TxDescArray;     /* 256-aligned Tx descriptor ring */
454         struct RxDesc *RxDescArray;     /* 256-aligned Rx descriptor ring */
455         dma_addr_t TxPhyAddr;
456         dma_addr_t RxPhyAddr;
457         struct sk_buff *Rx_skbuff[NUM_RX_DESC]; /* Rx data buffers */
458         struct ring_info tx_skb[NUM_TX_DESC];   /* Tx data buffers */
459         unsigned align;
460         unsigned rx_buf_sz;
461         struct timer_list timer;
462         u16 cp_cmd;
463         u16 intr_event;
464         u16 napi_event;
465         u16 intr_mask;
466         int phy_auto_nego_reg;
467         int phy_1000_ctrl_reg;
468 #ifdef CONFIG_R8169_VLAN
469         struct vlan_group *vlgrp;
470 #endif
471         int (*set_speed)(struct net_device *, u8 autoneg, u16 speed, u8 duplex);
472         int (*get_settings)(struct net_device *, struct ethtool_cmd *);
473         void (*phy_reset_enable)(void __iomem *);
474         void (*hw_start)(struct net_device *);
475         unsigned int (*phy_reset_pending)(void __iomem *);
476         unsigned int (*link_ok)(void __iomem *);
477         int pcie_cap;
478         struct delayed_work task;
479         unsigned features;
480
481         struct mii_if_info mii;
482 };
483
484 MODULE_AUTHOR("Realtek and the Linux r8169 crew <netdev@vger.kernel.org>");
485 MODULE_DESCRIPTION("RealTek RTL-8169 Gigabit Ethernet driver");
486 module_param(rx_copybreak, int, 0);
487 MODULE_PARM_DESC(rx_copybreak, "Copy breakpoint for copy-only-tiny-frames");
488 module_param(use_dac, int, 0);
489 MODULE_PARM_DESC(use_dac, "Enable PCI DAC. Unsafe on 32 bit PCI slot.");
490 module_param_named(debug, debug.msg_enable, int, 0);
491 MODULE_PARM_DESC(debug, "Debug verbosity level (0=none, ..., 16=all)");
492 MODULE_LICENSE("GPL");
493 MODULE_VERSION(RTL8169_VERSION);
494
495 static int rtl8169_open(struct net_device *dev);
496 static int rtl8169_start_xmit(struct sk_buff *skb, struct net_device *dev);
497 static irqreturn_t rtl8169_interrupt(int irq, void *dev_instance);
498 static int rtl8169_init_ring(struct net_device *dev);
499 static void rtl_hw_start(struct net_device *dev);
500 static int rtl8169_close(struct net_device *dev);
501 static void rtl_set_rx_mode(struct net_device *dev);
502 static void rtl8169_tx_timeout(struct net_device *dev);
503 static struct net_device_stats *rtl8169_get_stats(struct net_device *dev);
504 static int rtl8169_rx_interrupt(struct net_device *, struct rtl8169_private *,
505                                 void __iomem *, u32 budget);
506 static int rtl8169_change_mtu(struct net_device *dev, int new_mtu);
507 static void rtl8169_down(struct net_device *dev);
508 static void rtl8169_rx_clear(struct rtl8169_private *tp);
509 static int rtl8169_poll(struct napi_struct *napi, int budget);
510
511 static const unsigned int rtl8169_rx_config =
512         (RX_FIFO_THRESH << RxCfgFIFOShift) | (RX_DMA_BURST << RxCfgDMAShift);
513
514 static void mdio_write(void __iomem *ioaddr, int reg_addr, int value)
515 {
516         int i;
517
518         RTL_W32(PHYAR, 0x80000000 | (reg_addr & 0x1f) << 16 | (value & 0xffff));
519
520         for (i = 20; i > 0; i--) {
521                 /*
522                  * Check if the RTL8169 has completed writing to the specified
523                  * MII register.
524                  */
525                 if (!(RTL_R32(PHYAR) & 0x80000000))
526                         break;
527                 udelay(25);
528         }
529 }
530
531 static int mdio_read(void __iomem *ioaddr, int reg_addr)
532 {
533         int i, value = -1;
534
535         RTL_W32(PHYAR, 0x0 | (reg_addr & 0x1f) << 16);
536
537         for (i = 20; i > 0; i--) {
538                 /*
539                  * Check if the RTL8169 has completed retrieving data from
540                  * the specified MII register.
541                  */
542                 if (RTL_R32(PHYAR) & 0x80000000) {
543                         value = RTL_R32(PHYAR) & 0xffff;
544                         break;
545                 }
546                 udelay(25);
547         }
548         return value;
549 }
550
551 static void mdio_patch(void __iomem *ioaddr, int reg_addr, int value)
552 {
553         mdio_write(ioaddr, reg_addr, mdio_read(ioaddr, reg_addr) | value);
554 }
555
556 static void rtl_mdio_write(struct net_device *dev, int phy_id, int location,
557                            int val)
558 {
559         struct rtl8169_private *tp = netdev_priv(dev);
560         void __iomem *ioaddr = tp->mmio_addr;
561
562         mdio_write(ioaddr, location, val);
563 }
564
565 static int rtl_mdio_read(struct net_device *dev, int phy_id, int location)
566 {
567         struct rtl8169_private *tp = netdev_priv(dev);
568         void __iomem *ioaddr = tp->mmio_addr;
569
570         return mdio_read(ioaddr, location);
571 }
572
573 static void rtl_ephy_write(void __iomem *ioaddr, int reg_addr, int value)
574 {
575         unsigned int i;
576
577         RTL_W32(EPHYAR, EPHYAR_WRITE_CMD | (value & EPHYAR_DATA_MASK) |
578                 (reg_addr & EPHYAR_REG_MASK) << EPHYAR_REG_SHIFT);
579
580         for (i = 0; i < 100; i++) {
581                 if (!(RTL_R32(EPHYAR) & EPHYAR_FLAG))
582                         break;
583                 udelay(10);
584         }
585 }
586
587 static u16 rtl_ephy_read(void __iomem *ioaddr, int reg_addr)
588 {
589         u16 value = 0xffff;
590         unsigned int i;
591
592         RTL_W32(EPHYAR, (reg_addr & EPHYAR_REG_MASK) << EPHYAR_REG_SHIFT);
593
594         for (i = 0; i < 100; i++) {
595                 if (RTL_R32(EPHYAR) & EPHYAR_FLAG) {
596                         value = RTL_R32(EPHYAR) & EPHYAR_DATA_MASK;
597                         break;
598                 }
599                 udelay(10);
600         }
601
602         return value;
603 }
604
605 static void rtl_csi_write(void __iomem *ioaddr, int addr, int value)
606 {
607         unsigned int i;
608
609         RTL_W32(CSIDR, value);
610         RTL_W32(CSIAR, CSIAR_WRITE_CMD | (addr & CSIAR_ADDR_MASK) |
611                 CSIAR_BYTE_ENABLE << CSIAR_BYTE_ENABLE_SHIFT);
612
613         for (i = 0; i < 100; i++) {
614                 if (!(RTL_R32(CSIAR) & CSIAR_FLAG))
615                         break;
616                 udelay(10);
617         }
618 }
619
620 static u32 rtl_csi_read(void __iomem *ioaddr, int addr)
621 {
622         u32 value = ~0x00;
623         unsigned int i;
624
625         RTL_W32(CSIAR, (addr & CSIAR_ADDR_MASK) |
626                 CSIAR_BYTE_ENABLE << CSIAR_BYTE_ENABLE_SHIFT);
627
628         for (i = 0; i < 100; i++) {
629                 if (RTL_R32(CSIAR) & CSIAR_FLAG) {
630                         value = RTL_R32(CSIDR);
631                         break;
632                 }
633                 udelay(10);
634         }
635
636         return value;
637 }
638
639 static void rtl8169_irq_mask_and_ack(void __iomem *ioaddr)
640 {
641         RTL_W16(IntrMask, 0x0000);
642
643         RTL_W16(IntrStatus, 0xffff);
644 }
645
646 static void rtl8169_asic_down(void __iomem *ioaddr)
647 {
648         RTL_W8(ChipCmd, 0x00);
649         rtl8169_irq_mask_and_ack(ioaddr);
650         RTL_R16(CPlusCmd);
651 }
652
653 static unsigned int rtl8169_tbi_reset_pending(void __iomem *ioaddr)
654 {
655         return RTL_R32(TBICSR) & TBIReset;
656 }
657
658 static unsigned int rtl8169_xmii_reset_pending(void __iomem *ioaddr)
659 {
660         return mdio_read(ioaddr, MII_BMCR) & BMCR_RESET;
661 }
662
663 static unsigned int rtl8169_tbi_link_ok(void __iomem *ioaddr)
664 {
665         return RTL_R32(TBICSR) & TBILinkOk;
666 }
667
668 static unsigned int rtl8169_xmii_link_ok(void __iomem *ioaddr)
669 {
670         return RTL_R8(PHYstatus) & LinkStatus;
671 }
672
673 static void rtl8169_tbi_reset_enable(void __iomem *ioaddr)
674 {
675         RTL_W32(TBICSR, RTL_R32(TBICSR) | TBIReset);
676 }
677
678 static void rtl8169_xmii_reset_enable(void __iomem *ioaddr)
679 {
680         unsigned int val;
681
682         val = mdio_read(ioaddr, MII_BMCR) | BMCR_RESET;
683         mdio_write(ioaddr, MII_BMCR, val & 0xffff);
684 }
685
686 static void rtl8169_check_link_status(struct net_device *dev,
687                                       struct rtl8169_private *tp,
688                                       void __iomem *ioaddr)
689 {
690         unsigned long flags;
691
692         spin_lock_irqsave(&tp->lock, flags);
693         if (tp->link_ok(ioaddr)) {
694                 netif_carrier_on(dev);
695                 if (netif_msg_ifup(tp))
696                         printk(KERN_INFO PFX "%s: link up\n", dev->name);
697         } else {
698                 if (netif_msg_ifdown(tp))
699                         printk(KERN_INFO PFX "%s: link down\n", dev->name);
700                 netif_carrier_off(dev);
701         }
702         spin_unlock_irqrestore(&tp->lock, flags);
703 }
704
705 static void rtl8169_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
706 {
707         struct rtl8169_private *tp = netdev_priv(dev);
708         void __iomem *ioaddr = tp->mmio_addr;
709         u8 options;
710
711         wol->wolopts = 0;
712
713 #define WAKE_ANY (WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_BCAST | WAKE_MCAST)
714         wol->supported = WAKE_ANY;
715
716         spin_lock_irq(&tp->lock);
717
718         options = RTL_R8(Config1);
719         if (!(options & PMEnable))
720                 goto out_unlock;
721
722         options = RTL_R8(Config3);
723         if (options & LinkUp)
724                 wol->wolopts |= WAKE_PHY;
725         if (options & MagicPacket)
726                 wol->wolopts |= WAKE_MAGIC;
727
728         options = RTL_R8(Config5);
729         if (options & UWF)
730                 wol->wolopts |= WAKE_UCAST;
731         if (options & BWF)
732                 wol->wolopts |= WAKE_BCAST;
733         if (options & MWF)
734                 wol->wolopts |= WAKE_MCAST;
735
736 out_unlock:
737         spin_unlock_irq(&tp->lock);
738 }
739
740 static int rtl8169_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
741 {
742         struct rtl8169_private *tp = netdev_priv(dev);
743         void __iomem *ioaddr = tp->mmio_addr;
744         unsigned int i;
745         static struct {
746                 u32 opt;
747                 u16 reg;
748                 u8  mask;
749         } cfg[] = {
750                 { WAKE_ANY,   Config1, PMEnable },
751                 { WAKE_PHY,   Config3, LinkUp },
752                 { WAKE_MAGIC, Config3, MagicPacket },
753                 { WAKE_UCAST, Config5, UWF },
754                 { WAKE_BCAST, Config5, BWF },
755                 { WAKE_MCAST, Config5, MWF },
756                 { WAKE_ANY,   Config5, LanWake }
757         };
758
759         spin_lock_irq(&tp->lock);
760
761         RTL_W8(Cfg9346, Cfg9346_Unlock);
762
763         for (i = 0; i < ARRAY_SIZE(cfg); i++) {
764                 u8 options = RTL_R8(cfg[i].reg) & ~cfg[i].mask;
765                 if (wol->wolopts & cfg[i].opt)
766                         options |= cfg[i].mask;
767                 RTL_W8(cfg[i].reg, options);
768         }
769
770         RTL_W8(Cfg9346, Cfg9346_Lock);
771
772         if (wol->wolopts)
773                 tp->features |= RTL_FEATURE_WOL;
774         else
775                 tp->features &= ~RTL_FEATURE_WOL;
776         device_set_wakeup_enable(&tp->pci_dev->dev, wol->wolopts);
777
778         spin_unlock_irq(&tp->lock);
779
780         return 0;
781 }
782
783 static void rtl8169_get_drvinfo(struct net_device *dev,
784                                 struct ethtool_drvinfo *info)
785 {
786         struct rtl8169_private *tp = netdev_priv(dev);
787
788         strcpy(info->driver, MODULENAME);
789         strcpy(info->version, RTL8169_VERSION);
790         strcpy(info->bus_info, pci_name(tp->pci_dev));
791 }
792
793 static int rtl8169_get_regs_len(struct net_device *dev)
794 {
795         return R8169_REGS_SIZE;
796 }
797
798 static int rtl8169_set_speed_tbi(struct net_device *dev,
799                                  u8 autoneg, u16 speed, u8 duplex)
800 {
801         struct rtl8169_private *tp = netdev_priv(dev);
802         void __iomem *ioaddr = tp->mmio_addr;
803         int ret = 0;
804         u32 reg;
805
806         reg = RTL_R32(TBICSR);
807         if ((autoneg == AUTONEG_DISABLE) && (speed == SPEED_1000) &&
808             (duplex == DUPLEX_FULL)) {
809                 RTL_W32(TBICSR, reg & ~(TBINwEnable | TBINwRestart));
810         } else if (autoneg == AUTONEG_ENABLE)
811                 RTL_W32(TBICSR, reg | TBINwEnable | TBINwRestart);
812         else {
813                 if (netif_msg_link(tp)) {
814                         printk(KERN_WARNING "%s: "
815                                "incorrect speed setting refused in TBI mode\n",
816                                dev->name);
817                 }
818                 ret = -EOPNOTSUPP;
819         }
820
821         return ret;
822 }
823
824 static int rtl8169_set_speed_xmii(struct net_device *dev,
825                                   u8 autoneg, u16 speed, u8 duplex)
826 {
827         struct rtl8169_private *tp = netdev_priv(dev);
828         void __iomem *ioaddr = tp->mmio_addr;
829         int auto_nego, giga_ctrl;
830
831         auto_nego = mdio_read(ioaddr, MII_ADVERTISE);
832         auto_nego &= ~(ADVERTISE_10HALF | ADVERTISE_10FULL |
833                        ADVERTISE_100HALF | ADVERTISE_100FULL);
834         giga_ctrl = mdio_read(ioaddr, MII_CTRL1000);
835         giga_ctrl &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF);
836
837         if (autoneg == AUTONEG_ENABLE) {
838                 auto_nego |= (ADVERTISE_10HALF | ADVERTISE_10FULL |
839                               ADVERTISE_100HALF | ADVERTISE_100FULL);
840                 giga_ctrl |= ADVERTISE_1000FULL | ADVERTISE_1000HALF;
841         } else {
842                 if (speed == SPEED_10)
843                         auto_nego |= ADVERTISE_10HALF | ADVERTISE_10FULL;
844                 else if (speed == SPEED_100)
845                         auto_nego |= ADVERTISE_100HALF | ADVERTISE_100FULL;
846                 else if (speed == SPEED_1000)
847                         giga_ctrl |= ADVERTISE_1000FULL | ADVERTISE_1000HALF;
848
849                 if (duplex == DUPLEX_HALF)
850                         auto_nego &= ~(ADVERTISE_10FULL | ADVERTISE_100FULL);
851
852                 if (duplex == DUPLEX_FULL)
853                         auto_nego &= ~(ADVERTISE_10HALF | ADVERTISE_100HALF);
854
855                 /* This tweak comes straight from Realtek's driver. */
856                 if ((speed == SPEED_100) && (duplex == DUPLEX_HALF) &&
857                     ((tp->mac_version == RTL_GIGA_MAC_VER_13) ||
858                      (tp->mac_version == RTL_GIGA_MAC_VER_16))) {
859                         auto_nego = ADVERTISE_100HALF | ADVERTISE_CSMA;
860                 }
861         }
862
863         /* The 8100e/8101e/8102e do Fast Ethernet only. */
864         if ((tp->mac_version == RTL_GIGA_MAC_VER_07) ||
865             (tp->mac_version == RTL_GIGA_MAC_VER_08) ||
866             (tp->mac_version == RTL_GIGA_MAC_VER_09) ||
867             (tp->mac_version == RTL_GIGA_MAC_VER_10) ||
868             (tp->mac_version == RTL_GIGA_MAC_VER_13) ||
869             (tp->mac_version == RTL_GIGA_MAC_VER_14) ||
870             (tp->mac_version == RTL_GIGA_MAC_VER_15) ||
871             (tp->mac_version == RTL_GIGA_MAC_VER_16)) {
872                 if ((giga_ctrl & (ADVERTISE_1000FULL | ADVERTISE_1000HALF)) &&
873                     netif_msg_link(tp)) {
874                         printk(KERN_INFO "%s: PHY does not support 1000Mbps.\n",
875                                dev->name);
876                 }
877                 giga_ctrl &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF);
878         }
879
880         auto_nego |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
881
882         if ((tp->mac_version == RTL_GIGA_MAC_VER_11) ||
883             (tp->mac_version == RTL_GIGA_MAC_VER_12) ||
884             (tp->mac_version >= RTL_GIGA_MAC_VER_17)) {
885                 /*
886                  * Wake up the PHY.
887                  * Vendor specific (0x1f) and reserved (0x0e) MII registers.
888                  */
889                 mdio_write(ioaddr, 0x1f, 0x0000);
890                 mdio_write(ioaddr, 0x0e, 0x0000);
891         }
892
893         tp->phy_auto_nego_reg = auto_nego;
894         tp->phy_1000_ctrl_reg = giga_ctrl;
895
896         mdio_write(ioaddr, MII_ADVERTISE, auto_nego);
897         mdio_write(ioaddr, MII_CTRL1000, giga_ctrl);
898         mdio_write(ioaddr, MII_BMCR, BMCR_ANENABLE | BMCR_ANRESTART);
899         return 0;
900 }
901
902 static int rtl8169_set_speed(struct net_device *dev,
903                              u8 autoneg, u16 speed, u8 duplex)
904 {
905         struct rtl8169_private *tp = netdev_priv(dev);
906         int ret;
907
908         ret = tp->set_speed(dev, autoneg, speed, duplex);
909
910         if (netif_running(dev) && (tp->phy_1000_ctrl_reg & ADVERTISE_1000FULL))
911                 mod_timer(&tp->timer, jiffies + RTL8169_PHY_TIMEOUT);
912
913         return ret;
914 }
915
916 static int rtl8169_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
917 {
918         struct rtl8169_private *tp = netdev_priv(dev);
919         unsigned long flags;
920         int ret;
921
922         spin_lock_irqsave(&tp->lock, flags);
923         ret = rtl8169_set_speed(dev, cmd->autoneg, cmd->speed, cmd->duplex);
924         spin_unlock_irqrestore(&tp->lock, flags);
925
926         return ret;
927 }
928
929 static u32 rtl8169_get_rx_csum(struct net_device *dev)
930 {
931         struct rtl8169_private *tp = netdev_priv(dev);
932
933         return tp->cp_cmd & RxChkSum;
934 }
935
936 static int rtl8169_set_rx_csum(struct net_device *dev, u32 data)
937 {
938         struct rtl8169_private *tp = netdev_priv(dev);
939         void __iomem *ioaddr = tp->mmio_addr;
940         unsigned long flags;
941
942         spin_lock_irqsave(&tp->lock, flags);
943
944         if (data)
945                 tp->cp_cmd |= RxChkSum;
946         else
947                 tp->cp_cmd &= ~RxChkSum;
948
949         RTL_W16(CPlusCmd, tp->cp_cmd);
950         RTL_R16(CPlusCmd);
951
952         spin_unlock_irqrestore(&tp->lock, flags);
953
954         return 0;
955 }
956
957 #ifdef CONFIG_R8169_VLAN
958
959 static inline u32 rtl8169_tx_vlan_tag(struct rtl8169_private *tp,
960                                       struct sk_buff *skb)
961 {
962         return (tp->vlgrp && vlan_tx_tag_present(skb)) ?
963                 TxVlanTag | swab16(vlan_tx_tag_get(skb)) : 0x00;
964 }
965
966 static void rtl8169_vlan_rx_register(struct net_device *dev,
967                                      struct vlan_group *grp)
968 {
969         struct rtl8169_private *tp = netdev_priv(dev);
970         void __iomem *ioaddr = tp->mmio_addr;
971         unsigned long flags;
972
973         spin_lock_irqsave(&tp->lock, flags);
974         tp->vlgrp = grp;
975         if (tp->vlgrp)
976                 tp->cp_cmd |= RxVlan;
977         else
978                 tp->cp_cmd &= ~RxVlan;
979         RTL_W16(CPlusCmd, tp->cp_cmd);
980         RTL_R16(CPlusCmd);
981         spin_unlock_irqrestore(&tp->lock, flags);
982 }
983
984 static int rtl8169_rx_vlan_skb(struct rtl8169_private *tp, struct RxDesc *desc,
985                                struct sk_buff *skb)
986 {
987         u32 opts2 = le32_to_cpu(desc->opts2);
988         struct vlan_group *vlgrp = tp->vlgrp;
989         int ret;
990
991         if (vlgrp && (opts2 & RxVlanTag)) {
992                 vlan_hwaccel_receive_skb(skb, vlgrp, swab16(opts2 & 0xffff));
993                 ret = 0;
994         } else
995                 ret = -1;
996         desc->opts2 = 0;
997         return ret;
998 }
999
1000 #else /* !CONFIG_R8169_VLAN */
1001
1002 static inline u32 rtl8169_tx_vlan_tag(struct rtl8169_private *tp,
1003                                       struct sk_buff *skb)
1004 {
1005         return 0;
1006 }
1007
1008 static int rtl8169_rx_vlan_skb(struct rtl8169_private *tp, struct RxDesc *desc,
1009                                struct sk_buff *skb)
1010 {
1011         return -1;
1012 }
1013
1014 #endif
1015
1016 static int rtl8169_gset_tbi(struct net_device *dev, struct ethtool_cmd *cmd)
1017 {
1018         struct rtl8169_private *tp = netdev_priv(dev);
1019         void __iomem *ioaddr = tp->mmio_addr;
1020         u32 status;
1021
1022         cmd->supported =
1023                 SUPPORTED_1000baseT_Full | SUPPORTED_Autoneg | SUPPORTED_FIBRE;
1024         cmd->port = PORT_FIBRE;
1025         cmd->transceiver = XCVR_INTERNAL;
1026
1027         status = RTL_R32(TBICSR);
1028         cmd->advertising = (status & TBINwEnable) ?  ADVERTISED_Autoneg : 0;
1029         cmd->autoneg = !!(status & TBINwEnable);
1030
1031         cmd->speed = SPEED_1000;
1032         cmd->duplex = DUPLEX_FULL; /* Always set */
1033
1034         return 0;
1035 }
1036
1037 static int rtl8169_gset_xmii(struct net_device *dev, struct ethtool_cmd *cmd)
1038 {
1039         struct rtl8169_private *tp = netdev_priv(dev);
1040
1041         return mii_ethtool_gset(&tp->mii, cmd);
1042 }
1043
1044 static int rtl8169_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
1045 {
1046         struct rtl8169_private *tp = netdev_priv(dev);
1047         unsigned long flags;
1048         int rc;
1049
1050         spin_lock_irqsave(&tp->lock, flags);
1051
1052         rc = tp->get_settings(dev, cmd);
1053
1054         spin_unlock_irqrestore(&tp->lock, flags);
1055         return rc;
1056 }
1057
1058 static void rtl8169_get_regs(struct net_device *dev, struct ethtool_regs *regs,
1059                              void *p)
1060 {
1061         struct rtl8169_private *tp = netdev_priv(dev);
1062         unsigned long flags;
1063
1064         if (regs->len > R8169_REGS_SIZE)
1065                 regs->len = R8169_REGS_SIZE;
1066
1067         spin_lock_irqsave(&tp->lock, flags);
1068         memcpy_fromio(p, tp->mmio_addr, regs->len);
1069         spin_unlock_irqrestore(&tp->lock, flags);
1070 }
1071
1072 static u32 rtl8169_get_msglevel(struct net_device *dev)
1073 {
1074         struct rtl8169_private *tp = netdev_priv(dev);
1075
1076         return tp->msg_enable;
1077 }
1078
1079 static void rtl8169_set_msglevel(struct net_device *dev, u32 value)
1080 {
1081         struct rtl8169_private *tp = netdev_priv(dev);
1082
1083         tp->msg_enable = value;
1084 }
1085
1086 static const char rtl8169_gstrings[][ETH_GSTRING_LEN] = {
1087         "tx_packets",
1088         "rx_packets",
1089         "tx_errors",
1090         "rx_errors",
1091         "rx_missed",
1092         "align_errors",
1093         "tx_single_collisions",
1094         "tx_multi_collisions",
1095         "unicast",
1096         "broadcast",
1097         "multicast",
1098         "tx_aborted",
1099         "tx_underrun",
1100 };
1101
1102 struct rtl8169_counters {
1103         __le64  tx_packets;
1104         __le64  rx_packets;
1105         __le64  tx_errors;
1106         __le32  rx_errors;
1107         __le16  rx_missed;
1108         __le16  align_errors;
1109         __le32  tx_one_collision;
1110         __le32  tx_multi_collision;
1111         __le64  rx_unicast;
1112         __le64  rx_broadcast;
1113         __le32  rx_multicast;
1114         __le16  tx_aborted;
1115         __le16  tx_underun;
1116 };
1117
1118 static int rtl8169_get_sset_count(struct net_device *dev, int sset)
1119 {
1120         switch (sset) {
1121         case ETH_SS_STATS:
1122                 return ARRAY_SIZE(rtl8169_gstrings);
1123         default:
1124                 return -EOPNOTSUPP;
1125         }
1126 }
1127
1128 static void rtl8169_get_ethtool_stats(struct net_device *dev,
1129                                       struct ethtool_stats *stats, u64 *data)
1130 {
1131         struct rtl8169_private *tp = netdev_priv(dev);
1132         void __iomem *ioaddr = tp->mmio_addr;
1133         struct rtl8169_counters *counters;
1134         dma_addr_t paddr;
1135         u32 cmd;
1136
1137         ASSERT_RTNL();
1138
1139         counters = pci_alloc_consistent(tp->pci_dev, sizeof(*counters), &paddr);
1140         if (!counters)
1141                 return;
1142
1143         RTL_W32(CounterAddrHigh, (u64)paddr >> 32);
1144         cmd = (u64)paddr & DMA_32BIT_MASK;
1145         RTL_W32(CounterAddrLow, cmd);
1146         RTL_W32(CounterAddrLow, cmd | CounterDump);
1147
1148         while (RTL_R32(CounterAddrLow) & CounterDump) {
1149                 if (msleep_interruptible(1))
1150                         break;
1151         }
1152
1153         RTL_W32(CounterAddrLow, 0);
1154         RTL_W32(CounterAddrHigh, 0);
1155
1156         data[0] = le64_to_cpu(counters->tx_packets);
1157         data[1] = le64_to_cpu(counters->rx_packets);
1158         data[2] = le64_to_cpu(counters->tx_errors);
1159         data[3] = le32_to_cpu(counters->rx_errors);
1160         data[4] = le16_to_cpu(counters->rx_missed);
1161         data[5] = le16_to_cpu(counters->align_errors);
1162         data[6] = le32_to_cpu(counters->tx_one_collision);
1163         data[7] = le32_to_cpu(counters->tx_multi_collision);
1164         data[8] = le64_to_cpu(counters->rx_unicast);
1165         data[9] = le64_to_cpu(counters->rx_broadcast);
1166         data[10] = le32_to_cpu(counters->rx_multicast);
1167         data[11] = le16_to_cpu(counters->tx_aborted);
1168         data[12] = le16_to_cpu(counters->tx_underun);
1169
1170         pci_free_consistent(tp->pci_dev, sizeof(*counters), counters, paddr);
1171 }
1172
1173 static void rtl8169_get_strings(struct net_device *dev, u32 stringset, u8 *data)
1174 {
1175         switch(stringset) {
1176         case ETH_SS_STATS:
1177                 memcpy(data, *rtl8169_gstrings, sizeof(rtl8169_gstrings));
1178                 break;
1179         }
1180 }
1181
1182 static const struct ethtool_ops rtl8169_ethtool_ops = {
1183         .get_drvinfo            = rtl8169_get_drvinfo,
1184         .get_regs_len           = rtl8169_get_regs_len,
1185         .get_link               = ethtool_op_get_link,
1186         .get_settings           = rtl8169_get_settings,
1187         .set_settings           = rtl8169_set_settings,
1188         .get_msglevel           = rtl8169_get_msglevel,
1189         .set_msglevel           = rtl8169_set_msglevel,
1190         .get_rx_csum            = rtl8169_get_rx_csum,
1191         .set_rx_csum            = rtl8169_set_rx_csum,
1192         .set_tx_csum            = ethtool_op_set_tx_csum,
1193         .set_sg                 = ethtool_op_set_sg,
1194         .set_tso                = ethtool_op_set_tso,
1195         .get_regs               = rtl8169_get_regs,
1196         .get_wol                = rtl8169_get_wol,
1197         .set_wol                = rtl8169_set_wol,
1198         .get_strings            = rtl8169_get_strings,
1199         .get_sset_count         = rtl8169_get_sset_count,
1200         .get_ethtool_stats      = rtl8169_get_ethtool_stats,
1201 };
1202
1203 static void rtl8169_write_gmii_reg_bit(void __iomem *ioaddr, int reg,
1204                                        int bitnum, int bitval)
1205 {
1206         int val;
1207
1208         val = mdio_read(ioaddr, reg);
1209         val = (bitval == 1) ?
1210                 val | (bitval << bitnum) :  val & ~(0x0001 << bitnum);
1211         mdio_write(ioaddr, reg, val & 0xffff);
1212 }
1213
1214 static void rtl8169_get_mac_version(struct rtl8169_private *tp,
1215                                     void __iomem *ioaddr)
1216 {
1217         /*
1218          * The driver currently handles the 8168Bf and the 8168Be identically
1219          * but they can be identified more specifically through the test below
1220          * if needed:
1221          *
1222          * (RTL_R32(TxConfig) & 0x700000) == 0x500000 ? 8168Bf : 8168Be
1223          *
1224          * Same thing for the 8101Eb and the 8101Ec:
1225          *
1226          * (RTL_R32(TxConfig) & 0x700000) == 0x200000 ? 8101Eb : 8101Ec
1227          */
1228         const struct {
1229                 u32 mask;
1230                 u32 val;
1231                 int mac_version;
1232         } mac_info[] = {
1233                 /* 8168D family. */
1234                 { 0x7c800000, 0x28000000,       RTL_GIGA_MAC_VER_25 },
1235
1236                 /* 8168C family. */
1237                 { 0x7cf00000, 0x3ca00000,       RTL_GIGA_MAC_VER_24 },
1238                 { 0x7cf00000, 0x3c900000,       RTL_GIGA_MAC_VER_23 },
1239                 { 0x7cf00000, 0x3c800000,       RTL_GIGA_MAC_VER_18 },
1240                 { 0x7c800000, 0x3c800000,       RTL_GIGA_MAC_VER_24 },
1241                 { 0x7cf00000, 0x3c000000,       RTL_GIGA_MAC_VER_19 },
1242                 { 0x7cf00000, 0x3c200000,       RTL_GIGA_MAC_VER_20 },
1243                 { 0x7cf00000, 0x3c300000,       RTL_GIGA_MAC_VER_21 },
1244                 { 0x7cf00000, 0x3c400000,       RTL_GIGA_MAC_VER_22 },
1245                 { 0x7c800000, 0x3c000000,       RTL_GIGA_MAC_VER_22 },
1246
1247                 /* 8168B family. */
1248                 { 0x7cf00000, 0x38000000,       RTL_GIGA_MAC_VER_12 },
1249                 { 0x7cf00000, 0x38500000,       RTL_GIGA_MAC_VER_17 },
1250                 { 0x7c800000, 0x38000000,       RTL_GIGA_MAC_VER_17 },
1251                 { 0x7c800000, 0x30000000,       RTL_GIGA_MAC_VER_11 },
1252
1253                 /* 8101 family. */
1254                 { 0x7cf00000, 0x34a00000,       RTL_GIGA_MAC_VER_09 },
1255                 { 0x7cf00000, 0x24a00000,       RTL_GIGA_MAC_VER_09 },
1256                 { 0x7cf00000, 0x34900000,       RTL_GIGA_MAC_VER_08 },
1257                 { 0x7cf00000, 0x24900000,       RTL_GIGA_MAC_VER_08 },
1258                 { 0x7cf00000, 0x34800000,       RTL_GIGA_MAC_VER_07 },
1259                 { 0x7cf00000, 0x24800000,       RTL_GIGA_MAC_VER_07 },
1260                 { 0x7cf00000, 0x34000000,       RTL_GIGA_MAC_VER_13 },
1261                 { 0x7cf00000, 0x34300000,       RTL_GIGA_MAC_VER_10 },
1262                 { 0x7cf00000, 0x34200000,       RTL_GIGA_MAC_VER_16 },
1263                 { 0x7c800000, 0x34800000,       RTL_GIGA_MAC_VER_09 },
1264                 { 0x7c800000, 0x24800000,       RTL_GIGA_MAC_VER_09 },
1265                 { 0x7c800000, 0x34000000,       RTL_GIGA_MAC_VER_16 },
1266                 /* FIXME: where did these entries come from ? -- FR */
1267                 { 0xfc800000, 0x38800000,       RTL_GIGA_MAC_VER_15 },
1268                 { 0xfc800000, 0x30800000,       RTL_GIGA_MAC_VER_14 },
1269
1270                 /* 8110 family. */
1271                 { 0xfc800000, 0x98000000,       RTL_GIGA_MAC_VER_06 },
1272                 { 0xfc800000, 0x18000000,       RTL_GIGA_MAC_VER_05 },
1273                 { 0xfc800000, 0x10000000,       RTL_GIGA_MAC_VER_04 },
1274                 { 0xfc800000, 0x04000000,       RTL_GIGA_MAC_VER_03 },
1275                 { 0xfc800000, 0x00800000,       RTL_GIGA_MAC_VER_02 },
1276                 { 0xfc800000, 0x00000000,       RTL_GIGA_MAC_VER_01 },
1277
1278                 { 0x00000000, 0x00000000,       RTL_GIGA_MAC_VER_01 }   /* Catch-all */
1279         }, *p = mac_info;
1280         u32 reg;
1281
1282         reg = RTL_R32(TxConfig);
1283         while ((reg & p->mask) != p->val)
1284                 p++;
1285         tp->mac_version = p->mac_version;
1286
1287         if (p->mask == 0x00000000) {
1288                 struct pci_dev *pdev = tp->pci_dev;
1289
1290                 dev_info(&pdev->dev, "unknown MAC (%08x)\n", reg);
1291         }
1292 }
1293
1294 static void rtl8169_print_mac_version(struct rtl8169_private *tp)
1295 {
1296         dprintk("mac_version = 0x%02x\n", tp->mac_version);
1297 }
1298
1299 struct phy_reg {
1300         u16 reg;
1301         u16 val;
1302 };
1303
1304 static void rtl_phy_write(void __iomem *ioaddr, struct phy_reg *regs, int len)
1305 {
1306         while (len-- > 0) {
1307                 mdio_write(ioaddr, regs->reg, regs->val);
1308                 regs++;
1309         }
1310 }
1311
1312 static void rtl8169s_hw_phy_config(void __iomem *ioaddr)
1313 {
1314         struct {
1315                 u16 regs[5]; /* Beware of bit-sign propagation */
1316         } phy_magic[5] = { {
1317                 { 0x0000,       //w 4 15 12 0
1318                   0x00a1,       //w 3 15 0 00a1
1319                   0x0008,       //w 2 15 0 0008
1320                   0x1020,       //w 1 15 0 1020
1321                   0x1000 } },{  //w 0 15 0 1000
1322                 { 0x7000,       //w 4 15 12 7
1323                   0xff41,       //w 3 15 0 ff41
1324                   0xde60,       //w 2 15 0 de60
1325                   0x0140,       //w 1 15 0 0140
1326                   0x0077 } },{  //w 0 15 0 0077
1327                 { 0xa000,       //w 4 15 12 a
1328                   0xdf01,       //w 3 15 0 df01
1329                   0xdf20,       //w 2 15 0 df20
1330                   0xff95,       //w 1 15 0 ff95
1331                   0xfa00 } },{  //w 0 15 0 fa00
1332                 { 0xb000,       //w 4 15 12 b
1333                   0xff41,       //w 3 15 0 ff41
1334                   0xde20,       //w 2 15 0 de20
1335                   0x0140,       //w 1 15 0 0140
1336                   0x00bb } },{  //w 0 15 0 00bb
1337                 { 0xf000,       //w 4 15 12 f
1338                   0xdf01,       //w 3 15 0 df01
1339                   0xdf20,       //w 2 15 0 df20
1340                   0xff95,       //w 1 15 0 ff95
1341                   0xbf00 }      //w 0 15 0 bf00
1342                 }
1343         }, *p = phy_magic;
1344         unsigned int i;
1345
1346         mdio_write(ioaddr, 0x1f, 0x0001);               //w 31 2 0 1
1347         mdio_write(ioaddr, 0x15, 0x1000);               //w 21 15 0 1000
1348         mdio_write(ioaddr, 0x18, 0x65c7);               //w 24 15 0 65c7
1349         rtl8169_write_gmii_reg_bit(ioaddr, 4, 11, 0);   //w 4 11 11 0
1350
1351         for (i = 0; i < ARRAY_SIZE(phy_magic); i++, p++) {
1352                 int val, pos = 4;
1353
1354                 val = (mdio_read(ioaddr, pos) & 0x0fff) | (p->regs[0] & 0xffff);
1355                 mdio_write(ioaddr, pos, val);
1356                 while (--pos >= 0)
1357                         mdio_write(ioaddr, pos, p->regs[4 - pos] & 0xffff);
1358                 rtl8169_write_gmii_reg_bit(ioaddr, 4, 11, 1); //w 4 11 11 1
1359                 rtl8169_write_gmii_reg_bit(ioaddr, 4, 11, 0); //w 4 11 11 0
1360         }
1361         mdio_write(ioaddr, 0x1f, 0x0000); //w 31 2 0 0
1362 }
1363
1364 static void rtl8169sb_hw_phy_config(void __iomem *ioaddr)
1365 {
1366         struct phy_reg phy_reg_init[] = {
1367                 { 0x1f, 0x0002 },
1368                 { 0x01, 0x90d0 },
1369                 { 0x1f, 0x0000 }
1370         };
1371
1372         rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1373 }
1374
1375 static void rtl8168bb_hw_phy_config(void __iomem *ioaddr)
1376 {
1377         struct phy_reg phy_reg_init[] = {
1378                 { 0x10, 0xf41b },
1379                 { 0x1f, 0x0000 }
1380         };
1381
1382         mdio_write(ioaddr, 0x1f, 0x0001);
1383         mdio_patch(ioaddr, 0x16, 1 << 0);
1384
1385         rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1386 }
1387
1388 static void rtl8168bef_hw_phy_config(void __iomem *ioaddr)
1389 {
1390         struct phy_reg phy_reg_init[] = {
1391                 { 0x1f, 0x0001 },
1392                 { 0x10, 0xf41b },
1393                 { 0x1f, 0x0000 }
1394         };
1395
1396         rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1397 }
1398
1399 static void rtl8168cp_1_hw_phy_config(void __iomem *ioaddr)
1400 {
1401         struct phy_reg phy_reg_init[] = {
1402                 { 0x1f, 0x0000 },
1403                 { 0x1d, 0x0f00 },
1404                 { 0x1f, 0x0002 },
1405                 { 0x0c, 0x1ec8 },
1406                 { 0x1f, 0x0000 }
1407         };
1408
1409         rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1410 }
1411
1412 static void rtl8168cp_2_hw_phy_config(void __iomem *ioaddr)
1413 {
1414         struct phy_reg phy_reg_init[] = {
1415                 { 0x1f, 0x0001 },
1416                 { 0x1d, 0x3d98 },
1417                 { 0x1f, 0x0000 }
1418         };
1419
1420         mdio_write(ioaddr, 0x1f, 0x0000);
1421         mdio_patch(ioaddr, 0x14, 1 << 5);
1422         mdio_patch(ioaddr, 0x0d, 1 << 5);
1423
1424         rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1425 }
1426
1427 static void rtl8168c_1_hw_phy_config(void __iomem *ioaddr)
1428 {
1429         struct phy_reg phy_reg_init[] = {
1430                 { 0x1f, 0x0001 },
1431                 { 0x12, 0x2300 },
1432                 { 0x1f, 0x0002 },
1433                 { 0x00, 0x88d4 },
1434                 { 0x01, 0x82b1 },
1435                 { 0x03, 0x7002 },
1436                 { 0x08, 0x9e30 },
1437                 { 0x09, 0x01f0 },
1438                 { 0x0a, 0x5500 },
1439                 { 0x0c, 0x00c8 },
1440                 { 0x1f, 0x0003 },
1441                 { 0x12, 0xc096 },
1442                 { 0x16, 0x000a },
1443                 { 0x1f, 0x0000 },
1444                 { 0x1f, 0x0000 },
1445                 { 0x09, 0x2000 },
1446                 { 0x09, 0x0000 }
1447         };
1448
1449         rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1450
1451         mdio_patch(ioaddr, 0x14, 1 << 5);
1452         mdio_patch(ioaddr, 0x0d, 1 << 5);
1453         mdio_write(ioaddr, 0x1f, 0x0000);
1454 }
1455
1456 static void rtl8168c_2_hw_phy_config(void __iomem *ioaddr)
1457 {
1458         struct phy_reg phy_reg_init[] = {
1459                 { 0x1f, 0x0001 },
1460                 { 0x12, 0x2300 },
1461                 { 0x03, 0x802f },
1462                 { 0x02, 0x4f02 },
1463                 { 0x01, 0x0409 },
1464                 { 0x00, 0xf099 },
1465                 { 0x04, 0x9800 },
1466                 { 0x04, 0x9000 },
1467                 { 0x1d, 0x3d98 },
1468                 { 0x1f, 0x0002 },
1469                 { 0x0c, 0x7eb8 },
1470                 { 0x06, 0x0761 },
1471                 { 0x1f, 0x0003 },
1472                 { 0x16, 0x0f0a },
1473                 { 0x1f, 0x0000 }
1474         };
1475
1476         rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1477
1478         mdio_patch(ioaddr, 0x16, 1 << 0);
1479         mdio_patch(ioaddr, 0x14, 1 << 5);
1480         mdio_patch(ioaddr, 0x0d, 1 << 5);
1481         mdio_write(ioaddr, 0x1f, 0x0000);
1482 }
1483
1484 static void rtl8168c_3_hw_phy_config(void __iomem *ioaddr)
1485 {
1486         struct phy_reg phy_reg_init[] = {
1487                 { 0x1f, 0x0001 },
1488                 { 0x12, 0x2300 },
1489                 { 0x1d, 0x3d98 },
1490                 { 0x1f, 0x0002 },
1491                 { 0x0c, 0x7eb8 },
1492                 { 0x06, 0x5461 },
1493                 { 0x1f, 0x0003 },
1494                 { 0x16, 0x0f0a },
1495                 { 0x1f, 0x0000 }
1496         };
1497
1498         rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1499
1500         mdio_patch(ioaddr, 0x16, 1 << 0);
1501         mdio_patch(ioaddr, 0x14, 1 << 5);
1502         mdio_patch(ioaddr, 0x0d, 1 << 5);
1503         mdio_write(ioaddr, 0x1f, 0x0000);
1504 }
1505
1506 static void rtl8168c_4_hw_phy_config(void __iomem *ioaddr)
1507 {
1508         rtl8168c_3_hw_phy_config(ioaddr);
1509 }
1510
1511 static void rtl8168d_hw_phy_config(void __iomem *ioaddr)
1512 {
1513         struct phy_reg phy_reg_init_0[] = {
1514                 { 0x1f, 0x0001 },
1515                 { 0x09, 0x2770 },
1516                 { 0x08, 0x04d0 },
1517                 { 0x0b, 0xad15 },
1518                 { 0x0c, 0x5bf0 },
1519                 { 0x1c, 0xf101 },
1520                 { 0x1f, 0x0003 },
1521                 { 0x14, 0x94d7 },
1522                 { 0x12, 0xf4d6 },
1523                 { 0x09, 0xca0f },
1524                 { 0x1f, 0x0002 },
1525                 { 0x0b, 0x0b10 },
1526                 { 0x0c, 0xd1f7 },
1527                 { 0x1f, 0x0002 },
1528                 { 0x06, 0x5461 },
1529                 { 0x1f, 0x0002 },
1530                 { 0x05, 0x6662 },
1531                 { 0x1f, 0x0000 },
1532                 { 0x14, 0x0060 },
1533                 { 0x1f, 0x0000 },
1534                 { 0x0d, 0xf8a0 },
1535                 { 0x1f, 0x0005 },
1536                 { 0x05, 0xffc2 }
1537         };
1538
1539         rtl_phy_write(ioaddr, phy_reg_init_0, ARRAY_SIZE(phy_reg_init_0));
1540
1541         if (mdio_read(ioaddr, 0x06) == 0xc400) {
1542                 struct phy_reg phy_reg_init_1[] = {
1543                         { 0x1f, 0x0005 },
1544                         { 0x01, 0x0300 },
1545                         { 0x1f, 0x0000 },
1546                         { 0x11, 0x401c },
1547                         { 0x16, 0x4100 },
1548                         { 0x1f, 0x0005 },
1549                         { 0x07, 0x0010 },
1550                         { 0x05, 0x83dc },
1551                         { 0x06, 0x087d },
1552                         { 0x05, 0x8300 },
1553                         { 0x06, 0x0101 },
1554                         { 0x06, 0x05f8 },
1555                         { 0x06, 0xf9fa },
1556                         { 0x06, 0xfbef },
1557                         { 0x06, 0x79e2 },
1558                         { 0x06, 0x835f },
1559                         { 0x06, 0xe0f8 },
1560                         { 0x06, 0x9ae1 },
1561                         { 0x06, 0xf89b },
1562                         { 0x06, 0xef31 },
1563                         { 0x06, 0x3b65 },
1564                         { 0x06, 0xaa07 },
1565                         { 0x06, 0x81e4 },
1566                         { 0x06, 0xf89a },
1567                         { 0x06, 0xe5f8 },
1568                         { 0x06, 0x9baf },
1569                         { 0x06, 0x06ae },
1570                         { 0x05, 0x83dc },
1571                         { 0x06, 0x8300 },
1572                 };
1573
1574                 rtl_phy_write(ioaddr, phy_reg_init_1,
1575                               ARRAY_SIZE(phy_reg_init_1));
1576         }
1577
1578         mdio_write(ioaddr, 0x1f, 0x0000);
1579 }
1580
1581 static void rtl8102e_hw_phy_config(void __iomem *ioaddr)
1582 {
1583         struct phy_reg phy_reg_init[] = {
1584                 { 0x1f, 0x0003 },
1585                 { 0x08, 0x441d },
1586                 { 0x01, 0x9100 },
1587                 { 0x1f, 0x0000 }
1588         };
1589
1590         mdio_write(ioaddr, 0x1f, 0x0000);
1591         mdio_patch(ioaddr, 0x11, 1 << 12);
1592         mdio_patch(ioaddr, 0x19, 1 << 13);
1593
1594         rtl_phy_write(ioaddr, phy_reg_init, ARRAY_SIZE(phy_reg_init));
1595 }
1596
1597 static void rtl_hw_phy_config(struct net_device *dev)
1598 {
1599         struct rtl8169_private *tp = netdev_priv(dev);
1600         void __iomem *ioaddr = tp->mmio_addr;
1601
1602         rtl8169_print_mac_version(tp);
1603
1604         switch (tp->mac_version) {
1605         case RTL_GIGA_MAC_VER_01:
1606                 break;
1607         case RTL_GIGA_MAC_VER_02:
1608         case RTL_GIGA_MAC_VER_03:
1609                 rtl8169s_hw_phy_config(ioaddr);
1610                 break;
1611         case RTL_GIGA_MAC_VER_04:
1612                 rtl8169sb_hw_phy_config(ioaddr);
1613                 break;
1614         case RTL_GIGA_MAC_VER_07:
1615         case RTL_GIGA_MAC_VER_08:
1616         case RTL_GIGA_MAC_VER_09:
1617                 rtl8102e_hw_phy_config(ioaddr);
1618                 break;
1619         case RTL_GIGA_MAC_VER_11:
1620                 rtl8168bb_hw_phy_config(ioaddr);
1621                 break;
1622         case RTL_GIGA_MAC_VER_12:
1623                 rtl8168bef_hw_phy_config(ioaddr);
1624                 break;
1625         case RTL_GIGA_MAC_VER_17:
1626                 rtl8168bef_hw_phy_config(ioaddr);
1627                 break;
1628         case RTL_GIGA_MAC_VER_18:
1629                 rtl8168cp_1_hw_phy_config(ioaddr);
1630                 break;
1631         case RTL_GIGA_MAC_VER_19:
1632                 rtl8168c_1_hw_phy_config(ioaddr);
1633                 break;
1634         case RTL_GIGA_MAC_VER_20:
1635                 rtl8168c_2_hw_phy_config(ioaddr);
1636                 break;
1637         case RTL_GIGA_MAC_VER_21:
1638                 rtl8168c_3_hw_phy_config(ioaddr);
1639                 break;
1640         case RTL_GIGA_MAC_VER_22:
1641                 rtl8168c_4_hw_phy_config(ioaddr);
1642                 break;
1643         case RTL_GIGA_MAC_VER_23:
1644         case RTL_GIGA_MAC_VER_24:
1645                 rtl8168cp_2_hw_phy_config(ioaddr);
1646                 break;
1647         case RTL_GIGA_MAC_VER_25:
1648                 rtl8168d_hw_phy_config(ioaddr);
1649                 break;
1650
1651         default:
1652                 break;
1653         }
1654 }
1655
1656 static void rtl8169_phy_timer(unsigned long __opaque)
1657 {
1658         struct net_device *dev = (struct net_device *)__opaque;
1659         struct rtl8169_private *tp = netdev_priv(dev);
1660         struct timer_list *timer = &tp->timer;
1661         void __iomem *ioaddr = tp->mmio_addr;
1662         unsigned long timeout = RTL8169_PHY_TIMEOUT;
1663
1664         assert(tp->mac_version > RTL_GIGA_MAC_VER_01);
1665
1666         if (!(tp->phy_1000_ctrl_reg & ADVERTISE_1000FULL))
1667                 return;
1668
1669         spin_lock_irq(&tp->lock);
1670
1671         if (tp->phy_reset_pending(ioaddr)) {
1672                 /*
1673                  * A busy loop could burn quite a few cycles on nowadays CPU.
1674                  * Let's delay the execution of the timer for a few ticks.
1675                  */
1676                 timeout = HZ/10;
1677                 goto out_mod_timer;
1678         }
1679
1680         if (tp->link_ok(ioaddr))
1681                 goto out_unlock;
1682
1683         if (netif_msg_link(tp))
1684                 printk(KERN_WARNING "%s: PHY reset until link up\n", dev->name);
1685
1686         tp->phy_reset_enable(ioaddr);
1687
1688 out_mod_timer:
1689         mod_timer(timer, jiffies + timeout);
1690 out_unlock:
1691         spin_unlock_irq(&tp->lock);
1692 }
1693
1694 static inline void rtl8169_delete_timer(struct net_device *dev)
1695 {
1696         struct rtl8169_private *tp = netdev_priv(dev);
1697         struct timer_list *timer = &tp->timer;
1698
1699         if (tp->mac_version <= RTL_GIGA_MAC_VER_01)
1700                 return;
1701
1702         del_timer_sync(timer);
1703 }
1704
1705 static inline void rtl8169_request_timer(struct net_device *dev)
1706 {
1707         struct rtl8169_private *tp = netdev_priv(dev);
1708         struct timer_list *timer = &tp->timer;
1709
1710         if (tp->mac_version <= RTL_GIGA_MAC_VER_01)
1711                 return;
1712
1713         mod_timer(timer, jiffies + RTL8169_PHY_TIMEOUT);
1714 }
1715
1716 #ifdef CONFIG_NET_POLL_CONTROLLER
1717 /*
1718  * Polling 'interrupt' - used by things like netconsole to send skbs
1719  * without having to re-enable interrupts. It's not called while
1720  * the interrupt routine is executing.
1721  */
1722 static void rtl8169_netpoll(struct net_device *dev)
1723 {
1724         struct rtl8169_private *tp = netdev_priv(dev);
1725         struct pci_dev *pdev = tp->pci_dev;
1726
1727         disable_irq(pdev->irq);
1728         rtl8169_interrupt(pdev->irq, dev);
1729         enable_irq(pdev->irq);
1730 }
1731 #endif
1732
1733 static void rtl8169_release_board(struct pci_dev *pdev, struct net_device *dev,
1734                                   void __iomem *ioaddr)
1735 {
1736         iounmap(ioaddr);
1737         pci_release_regions(pdev);
1738         pci_disable_device(pdev);
1739         free_netdev(dev);
1740 }
1741
1742 static void rtl8169_phy_reset(struct net_device *dev,
1743                               struct rtl8169_private *tp)
1744 {
1745         void __iomem *ioaddr = tp->mmio_addr;
1746         unsigned int i;
1747
1748         tp->phy_reset_enable(ioaddr);
1749         for (i = 0; i < 100; i++) {
1750                 if (!tp->phy_reset_pending(ioaddr))
1751                         return;
1752                 msleep(1);
1753         }
1754         if (netif_msg_link(tp))
1755                 printk(KERN_ERR "%s: PHY reset failed.\n", dev->name);
1756 }
1757
1758 static void rtl8169_init_phy(struct net_device *dev, struct rtl8169_private *tp)
1759 {
1760         void __iomem *ioaddr = tp->mmio_addr;
1761
1762         rtl_hw_phy_config(dev);
1763
1764         if (tp->mac_version <= RTL_GIGA_MAC_VER_06) {
1765                 dprintk("Set MAC Reg C+CR Offset 0x82h = 0x01h\n");
1766                 RTL_W8(0x82, 0x01);
1767         }
1768
1769         pci_write_config_byte(tp->pci_dev, PCI_LATENCY_TIMER, 0x40);
1770
1771         if (tp->mac_version <= RTL_GIGA_MAC_VER_06)
1772                 pci_write_config_byte(tp->pci_dev, PCI_CACHE_LINE_SIZE, 0x08);
1773
1774         if (tp->mac_version == RTL_GIGA_MAC_VER_02) {
1775                 dprintk("Set MAC Reg C+CR Offset 0x82h = 0x01h\n");
1776                 RTL_W8(0x82, 0x01);
1777                 dprintk("Set PHY Reg 0x0bh = 0x00h\n");
1778                 mdio_write(ioaddr, 0x0b, 0x0000); //w 0x0b 15 0 0
1779         }
1780
1781         rtl8169_phy_reset(dev, tp);
1782
1783         /*
1784          * rtl8169_set_speed_xmii takes good care of the Fast Ethernet
1785          * only 8101. Don't panic.
1786          */
1787         rtl8169_set_speed(dev, AUTONEG_ENABLE, SPEED_1000, DUPLEX_FULL);
1788
1789         if ((RTL_R8(PHYstatus) & TBI_Enable) && netif_msg_link(tp))
1790                 printk(KERN_INFO PFX "%s: TBI auto-negotiating\n", dev->name);
1791 }
1792
1793 static void rtl_rar_set(struct rtl8169_private *tp, u8 *addr)
1794 {
1795         void __iomem *ioaddr = tp->mmio_addr;
1796         u32 high;
1797         u32 low;
1798
1799         low  = addr[0] | (addr[1] << 8) | (addr[2] << 16) | (addr[3] << 24);
1800         high = addr[4] | (addr[5] << 8);
1801
1802         spin_lock_irq(&tp->lock);
1803
1804         RTL_W8(Cfg9346, Cfg9346_Unlock);
1805         RTL_W32(MAC0, low);
1806         RTL_W32(MAC4, high);
1807         RTL_W8(Cfg9346, Cfg9346_Lock);
1808
1809         spin_unlock_irq(&tp->lock);
1810 }
1811
1812 static int rtl_set_mac_address(struct net_device *dev, void *p)
1813 {
1814         struct rtl8169_private *tp = netdev_priv(dev);
1815         struct sockaddr *addr = p;
1816
1817         if (!is_valid_ether_addr(addr->sa_data))
1818                 return -EADDRNOTAVAIL;
1819
1820         memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
1821
1822         rtl_rar_set(tp, dev->dev_addr);
1823
1824         return 0;
1825 }
1826
1827 static int rtl8169_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
1828 {
1829         struct rtl8169_private *tp = netdev_priv(dev);
1830         struct mii_ioctl_data *data = if_mii(ifr);
1831
1832         if (!netif_running(dev))
1833                 return -ENODEV;
1834
1835         switch (cmd) {
1836         case SIOCGMIIPHY:
1837                 data->phy_id = 32; /* Internal PHY */
1838                 return 0;
1839
1840         case SIOCGMIIREG:
1841                 data->val_out = mdio_read(tp->mmio_addr, data->reg_num & 0x1f);
1842                 return 0;
1843
1844         case SIOCSMIIREG:
1845                 if (!capable(CAP_NET_ADMIN))
1846                         return -EPERM;
1847                 mdio_write(tp->mmio_addr, data->reg_num & 0x1f, data->val_in);
1848                 return 0;
1849         }
1850         return -EOPNOTSUPP;
1851 }
1852
1853 static const struct rtl_cfg_info {
1854         void (*hw_start)(struct net_device *);
1855         unsigned int region;
1856         unsigned int align;
1857         u16 intr_event;
1858         u16 napi_event;
1859         unsigned features;
1860 } rtl_cfg_infos [] = {
1861         [RTL_CFG_0] = {
1862                 .hw_start       = rtl_hw_start_8169,
1863                 .region         = 1,
1864                 .align          = 0,
1865                 .intr_event     = SYSErr | LinkChg | RxOverflow |
1866                                   RxFIFOOver | TxErr | TxOK | RxOK | RxErr,
1867                 .napi_event     = RxFIFOOver | TxErr | TxOK | RxOK | RxOverflow,
1868                 .features       = RTL_FEATURE_GMII
1869         },
1870         [RTL_CFG_1] = {
1871                 .hw_start       = rtl_hw_start_8168,
1872                 .region         = 2,
1873                 .align          = 8,
1874                 .intr_event     = SYSErr | LinkChg | RxOverflow |
1875                                   TxErr | TxOK | RxOK | RxErr,
1876                 .napi_event     = TxErr | TxOK | RxOK | RxOverflow,
1877                 .features       = RTL_FEATURE_GMII | RTL_FEATURE_MSI
1878         },
1879         [RTL_CFG_2] = {
1880                 .hw_start       = rtl_hw_start_8101,
1881                 .region         = 2,
1882                 .align          = 8,
1883                 .intr_event     = SYSErr | LinkChg | RxOverflow | PCSTimeout |
1884                                   RxFIFOOver | TxErr | TxOK | RxOK | RxErr,
1885                 .napi_event     = RxFIFOOver | TxErr | TxOK | RxOK | RxOverflow,
1886                 .features       = RTL_FEATURE_MSI
1887         }
1888 };
1889
1890 /* Cfg9346_Unlock assumed. */
1891 static unsigned rtl_try_msi(struct pci_dev *pdev, void __iomem *ioaddr,
1892                             const struct rtl_cfg_info *cfg)
1893 {
1894         unsigned msi = 0;
1895         u8 cfg2;
1896
1897         cfg2 = RTL_R8(Config2) & ~MSIEnable;
1898         if (cfg->features & RTL_FEATURE_MSI) {
1899                 if (pci_enable_msi(pdev)) {
1900                         dev_info(&pdev->dev, "no MSI. Back to INTx.\n");
1901                 } else {
1902                         cfg2 |= MSIEnable;
1903                         msi = RTL_FEATURE_MSI;
1904                 }
1905         }
1906         RTL_W8(Config2, cfg2);
1907         return msi;
1908 }
1909
1910 static void rtl_disable_msi(struct pci_dev *pdev, struct rtl8169_private *tp)
1911 {
1912         if (tp->features & RTL_FEATURE_MSI) {
1913                 pci_disable_msi(pdev);
1914                 tp->features &= ~RTL_FEATURE_MSI;
1915         }
1916 }
1917
1918 static int rtl_eeprom_read(struct pci_dev *pdev, int cap, int addr, __le32 *val)
1919 {
1920         int ret, count = 100;
1921         u16 status = 0;
1922         u32 value;
1923
1924         ret = pci_write_config_word(pdev, cap + PCI_VPD_ADDR, addr);
1925         if (ret < 0)
1926                 return ret;
1927
1928         do {
1929                 udelay(10);
1930                 ret = pci_read_config_word(pdev, cap + PCI_VPD_ADDR, &status);
1931                 if (ret < 0)
1932                         return ret;
1933         } while (!(status & PCI_VPD_ADDR_F) && --count);
1934
1935         if (!(status & PCI_VPD_ADDR_F))
1936                 return -ETIMEDOUT;
1937
1938         ret = pci_read_config_dword(pdev, cap + PCI_VPD_DATA, &value);
1939         if (ret < 0)
1940                 return ret;
1941
1942         *val = cpu_to_le32(value);
1943
1944         return 0;
1945 }
1946
1947 static void rtl_init_mac_address(struct rtl8169_private *tp,
1948                                  void __iomem *ioaddr)
1949 {
1950         struct pci_dev *pdev = tp->pci_dev;
1951         int vpd_cap;
1952         __le32 sig;
1953         u8 mac[8];
1954         u8 cfg1;
1955
1956         cfg1 = RTL_R8(Config1);
1957         if (!(cfg1  & VPD)) {
1958                 if (netif_msg_probe(tp))
1959                         dev_info(&pdev->dev, "VPD access disabled, enabling\n");
1960                 RTL_W8(Cfg9346, Cfg9346_Unlock);
1961                 RTL_W8(Config1, cfg1 | VPD);
1962                 RTL_W8(Cfg9346, Cfg9346_Lock);
1963         }
1964
1965         vpd_cap = pci_find_capability(pdev, PCI_CAP_ID_VPD);
1966         if (!vpd_cap)
1967                 return;
1968
1969         if (rtl_eeprom_read(pdev, vpd_cap, RTL_EEPROM_SIG_ADDR, &sig) < 0)
1970                 return;
1971
1972         if ((sig & RTL_EEPROM_SIG_MASK) != RTL_EEPROM_SIG) {
1973                 dev_info(&pdev->dev, "Missing EEPROM signature: %08x\n", sig);
1974                 return;
1975         }
1976
1977         /*
1978          * MAC address is stored in EEPROM at offset 0x0e
1979          * Realtek says: "The VPD address does not have to be a DWORD-aligned
1980          * address as defined in the PCI 2.2 Specifications, but the VPD data
1981          * is always consecutive 4-byte data starting from the VPD address
1982          * specified."
1983          */
1984         if (rtl_eeprom_read(pdev, vpd_cap, 0x000e, (__le32*)&mac[0]) < 0 ||
1985             rtl_eeprom_read(pdev, vpd_cap, 0x0012, (__le32*)&mac[4]) < 0) {
1986                 if (netif_msg_probe(tp)) {
1987                         dev_warn(&pdev->dev,
1988                                  "reading MAC address from EEPROM failed\n");
1989                 }
1990                 return;
1991         }
1992
1993         if (netif_msg_probe(tp)) {
1994                 DECLARE_MAC_BUF(buf);
1995
1996                 dev_info(&pdev->dev, "MAC address found in EEPROM: %s\n",
1997                          print_mac(buf, mac));
1998         }
1999
2000         if (is_valid_ether_addr(mac))
2001                 rtl_rar_set(tp, mac);
2002 }
2003
2004 static int __devinit
2005 rtl8169_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
2006 {
2007         const struct rtl_cfg_info *cfg = rtl_cfg_infos + ent->driver_data;
2008         const unsigned int region = cfg->region;
2009         struct rtl8169_private *tp;
2010         struct mii_if_info *mii;
2011         struct net_device *dev;
2012         void __iomem *ioaddr;
2013         unsigned int i;
2014         int rc;
2015
2016         if (netif_msg_drv(&debug)) {
2017                 printk(KERN_INFO "%s Gigabit Ethernet driver %s loaded\n",
2018                        MODULENAME, RTL8169_VERSION);
2019         }
2020
2021         dev = alloc_etherdev(sizeof (*tp));
2022         if (!dev) {
2023                 if (netif_msg_drv(&debug))
2024                         dev_err(&pdev->dev, "unable to alloc new ethernet\n");
2025                 rc = -ENOMEM;
2026                 goto out;
2027         }
2028
2029         SET_NETDEV_DEV(dev, &pdev->dev);
2030         tp = netdev_priv(dev);
2031         tp->dev = dev;
2032         tp->pci_dev = pdev;
2033         tp->msg_enable = netif_msg_init(debug.msg_enable, R8169_MSG_DEFAULT);
2034
2035         mii = &tp->mii;
2036         mii->dev = dev;
2037         mii->mdio_read = rtl_mdio_read;
2038         mii->mdio_write = rtl_mdio_write;
2039         mii->phy_id_mask = 0x1f;
2040         mii->reg_num_mask = 0x1f;
2041         mii->supports_gmii = !!(cfg->features & RTL_FEATURE_GMII);
2042
2043         /* enable device (incl. PCI PM wakeup and hotplug setup) */
2044         rc = pci_enable_device(pdev);
2045         if (rc < 0) {
2046                 if (netif_msg_probe(tp))
2047                         dev_err(&pdev->dev, "enable failure\n");
2048                 goto err_out_free_dev_1;
2049         }
2050
2051         rc = pci_set_mwi(pdev);
2052         if (rc < 0)
2053                 goto err_out_disable_2;
2054
2055         /* make sure PCI base addr 1 is MMIO */
2056         if (!(pci_resource_flags(pdev, region) & IORESOURCE_MEM)) {
2057                 if (netif_msg_probe(tp)) {
2058                         dev_err(&pdev->dev,
2059                                 "region #%d not an MMIO resource, aborting\n",
2060                                 region);
2061                 }
2062                 rc = -ENODEV;
2063                 goto err_out_mwi_3;
2064         }
2065
2066         /* check for weird/broken PCI region reporting */
2067         if (pci_resource_len(pdev, region) < R8169_REGS_SIZE) {
2068                 if (netif_msg_probe(tp)) {
2069                         dev_err(&pdev->dev,
2070                                 "Invalid PCI region size(s), aborting\n");
2071                 }
2072                 rc = -ENODEV;
2073                 goto err_out_mwi_3;
2074         }
2075
2076         rc = pci_request_regions(pdev, MODULENAME);
2077         if (rc < 0) {
2078                 if (netif_msg_probe(tp))
2079                         dev_err(&pdev->dev, "could not request regions.\n");
2080                 goto err_out_mwi_3;
2081         }
2082
2083         tp->cp_cmd = PCIMulRW | RxChkSum;
2084
2085         if ((sizeof(dma_addr_t) > 4) &&
2086             !pci_set_dma_mask(pdev, DMA_64BIT_MASK) && use_dac) {
2087                 tp->cp_cmd |= PCIDAC;
2088                 dev->features |= NETIF_F_HIGHDMA;
2089         } else {
2090                 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
2091                 if (rc < 0) {
2092                         if (netif_msg_probe(tp)) {
2093                                 dev_err(&pdev->dev,
2094                                         "DMA configuration failed.\n");
2095                         }
2096                         goto err_out_free_res_4;
2097                 }
2098         }
2099
2100         pci_set_master(pdev);
2101
2102         /* ioremap MMIO region */
2103         ioaddr = ioremap(pci_resource_start(pdev, region), R8169_REGS_SIZE);
2104         if (!ioaddr) {
2105                 if (netif_msg_probe(tp))
2106                         dev_err(&pdev->dev, "cannot remap MMIO, aborting\n");
2107                 rc = -EIO;
2108                 goto err_out_free_res_4;
2109         }
2110
2111         tp->pcie_cap = pci_find_capability(pdev, PCI_CAP_ID_EXP);
2112         if (!tp->pcie_cap && netif_msg_probe(tp))
2113                 dev_info(&pdev->dev, "no PCI Express capability\n");
2114
2115         /* Unneeded ? Don't mess with Mrs. Murphy. */
2116         rtl8169_irq_mask_and_ack(ioaddr);
2117
2118         /* Soft reset the chip. */
2119         RTL_W8(ChipCmd, CmdReset);
2120
2121         /* Check that the chip has finished the reset. */
2122         for (i = 0; i < 100; i++) {
2123                 if ((RTL_R8(ChipCmd) & CmdReset) == 0)
2124                         break;
2125                 msleep_interruptible(1);
2126         }
2127
2128         /* Identify chip attached to board */
2129         rtl8169_get_mac_version(tp, ioaddr);
2130
2131         rtl8169_print_mac_version(tp);
2132
2133         for (i = 0; i < ARRAY_SIZE(rtl_chip_info); i++) {
2134                 if (tp->mac_version == rtl_chip_info[i].mac_version)
2135                         break;
2136         }
2137         if (i == ARRAY_SIZE(rtl_chip_info)) {
2138                 /* Unknown chip: assume array element #0, original RTL-8169 */
2139                 if (netif_msg_probe(tp)) {
2140                         dev_printk(KERN_DEBUG, &pdev->dev,
2141                                 "unknown chip version, assuming %s\n",
2142                                 rtl_chip_info[0].name);
2143                 }
2144                 i = 0;
2145         }
2146         tp->chipset = i;
2147
2148         RTL_W8(Cfg9346, Cfg9346_Unlock);
2149         RTL_W8(Config1, RTL_R8(Config1) | PMEnable);
2150         RTL_W8(Config5, RTL_R8(Config5) & PMEStatus);
2151         if ((RTL_R8(Config3) & (LinkUp | MagicPacket)) != 0)
2152                 tp->features |= RTL_FEATURE_WOL;
2153         if ((RTL_R8(Config5) & (UWF | BWF | MWF)) != 0)
2154                 tp->features |= RTL_FEATURE_WOL;
2155         tp->features |= rtl_try_msi(pdev, ioaddr, cfg);
2156         RTL_W8(Cfg9346, Cfg9346_Lock);
2157
2158         if ((tp->mac_version <= RTL_GIGA_MAC_VER_06) &&
2159             (RTL_R8(PHYstatus) & TBI_Enable)) {
2160                 tp->set_speed = rtl8169_set_speed_tbi;
2161                 tp->get_settings = rtl8169_gset_tbi;
2162                 tp->phy_reset_enable = rtl8169_tbi_reset_enable;
2163                 tp->phy_reset_pending = rtl8169_tbi_reset_pending;
2164                 tp->link_ok = rtl8169_tbi_link_ok;
2165
2166                 tp->phy_1000_ctrl_reg = ADVERTISE_1000FULL; /* Implied by TBI */
2167         } else {
2168                 tp->set_speed = rtl8169_set_speed_xmii;
2169                 tp->get_settings = rtl8169_gset_xmii;
2170                 tp->phy_reset_enable = rtl8169_xmii_reset_enable;
2171                 tp->phy_reset_pending = rtl8169_xmii_reset_pending;
2172                 tp->link_ok = rtl8169_xmii_link_ok;
2173
2174                 dev->do_ioctl = rtl8169_ioctl;
2175         }
2176
2177         spin_lock_init(&tp->lock);
2178
2179         tp->mmio_addr = ioaddr;
2180
2181         rtl_init_mac_address(tp, ioaddr);
2182
2183         /* Get MAC address */
2184         for (i = 0; i < MAC_ADDR_LEN; i++)
2185                 dev->dev_addr[i] = RTL_R8(MAC0 + i);
2186         memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
2187
2188         dev->open = rtl8169_open;
2189         dev->hard_start_xmit = rtl8169_start_xmit;
2190         dev->get_stats = rtl8169_get_stats;
2191         SET_ETHTOOL_OPS(dev, &rtl8169_ethtool_ops);
2192         dev->stop = rtl8169_close;
2193         dev->tx_timeout = rtl8169_tx_timeout;
2194         dev->set_multicast_list = rtl_set_rx_mode;
2195         dev->watchdog_timeo = RTL8169_TX_TIMEOUT;
2196         dev->irq = pdev->irq;
2197         dev->base_addr = (unsigned long) ioaddr;
2198         dev->change_mtu = rtl8169_change_mtu;
2199         dev->set_mac_address = rtl_set_mac_address;
2200
2201         netif_napi_add(dev, &tp->napi, rtl8169_poll, R8169_NAPI_WEIGHT);
2202
2203 #ifdef CONFIG_R8169_VLAN
2204         dev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
2205         dev->vlan_rx_register = rtl8169_vlan_rx_register;
2206 #endif
2207
2208 #ifdef CONFIG_NET_POLL_CONTROLLER
2209         dev->poll_controller = rtl8169_netpoll;
2210 #endif
2211
2212         tp->intr_mask = 0xffff;
2213         tp->align = cfg->align;
2214         tp->hw_start = cfg->hw_start;
2215         tp->intr_event = cfg->intr_event;
2216         tp->napi_event = cfg->napi_event;
2217
2218         init_timer(&tp->timer);
2219         tp->timer.data = (unsigned long) dev;
2220         tp->timer.function = rtl8169_phy_timer;
2221
2222         rc = register_netdev(dev);
2223         if (rc < 0)
2224                 goto err_out_msi_5;
2225
2226         pci_set_drvdata(pdev, dev);
2227
2228         if (netif_msg_probe(tp)) {
2229                 u32 xid = RTL_R32(TxConfig) & 0x7cf0f8ff;
2230
2231                 printk(KERN_INFO "%s: %s at 0x%lx, "
2232                        "%2.2x:%2.2x:%2.2x:%2.2x:%2.2x:%2.2x, "
2233                        "XID %08x IRQ %d\n",
2234                        dev->name,
2235                        rtl_chip_info[tp->chipset].name,
2236                        dev->base_addr,
2237                        dev->dev_addr[0], dev->dev_addr[1],
2238                        dev->dev_addr[2], dev->dev_addr[3],
2239                        dev->dev_addr[4], dev->dev_addr[5], xid, dev->irq);
2240         }
2241
2242         rtl8169_init_phy(dev, tp);
2243         device_set_wakeup_enable(&pdev->dev, tp->features & RTL_FEATURE_WOL);
2244
2245 out:
2246         return rc;
2247
2248 err_out_msi_5:
2249         rtl_disable_msi(pdev, tp);
2250         iounmap(ioaddr);
2251 err_out_free_res_4:
2252         pci_release_regions(pdev);
2253 err_out_mwi_3:
2254         pci_clear_mwi(pdev);
2255 err_out_disable_2:
2256         pci_disable_device(pdev);
2257 err_out_free_dev_1:
2258         free_netdev(dev);
2259         goto out;
2260 }
2261
2262 static void __devexit rtl8169_remove_one(struct pci_dev *pdev)
2263 {
2264         struct net_device *dev = pci_get_drvdata(pdev);
2265         struct rtl8169_private *tp = netdev_priv(dev);
2266
2267         flush_scheduled_work();
2268
2269         unregister_netdev(dev);
2270         rtl_disable_msi(pdev, tp);
2271         rtl8169_release_board(pdev, dev, tp->mmio_addr);
2272         pci_set_drvdata(pdev, NULL);
2273 }
2274
2275 static void rtl8169_set_rxbufsize(struct rtl8169_private *tp,
2276                                   struct net_device *dev)
2277 {
2278         unsigned int mtu = dev->mtu;
2279
2280         tp->rx_buf_sz = (mtu > RX_BUF_SIZE) ? mtu + ETH_HLEN + 8 : RX_BUF_SIZE;
2281 }
2282
2283 static int rtl8169_open(struct net_device *dev)
2284 {
2285         struct rtl8169_private *tp = netdev_priv(dev);
2286         struct pci_dev *pdev = tp->pci_dev;
2287         int retval = -ENOMEM;
2288
2289
2290         rtl8169_set_rxbufsize(tp, dev);
2291
2292         /*
2293          * Rx and Tx desscriptors needs 256 bytes alignment.
2294          * pci_alloc_consistent provides more.
2295          */
2296         tp->TxDescArray = pci_alloc_consistent(pdev, R8169_TX_RING_BYTES,
2297                                                &tp->TxPhyAddr);
2298         if (!tp->TxDescArray)
2299                 goto out;
2300
2301         tp->RxDescArray = pci_alloc_consistent(pdev, R8169_RX_RING_BYTES,
2302                                                &tp->RxPhyAddr);
2303         if (!tp->RxDescArray)
2304                 goto err_free_tx_0;
2305
2306         retval = rtl8169_init_ring(dev);
2307         if (retval < 0)
2308                 goto err_free_rx_1;
2309
2310         INIT_DELAYED_WORK(&tp->task, NULL);
2311
2312         smp_mb();
2313
2314         retval = request_irq(dev->irq, rtl8169_interrupt,
2315                              (tp->features & RTL_FEATURE_MSI) ? 0 : IRQF_SHARED,
2316                              dev->name, dev);
2317         if (retval < 0)
2318                 goto err_release_ring_2;
2319
2320         napi_enable(&tp->napi);
2321
2322         rtl_hw_start(dev);
2323
2324         rtl8169_request_timer(dev);
2325
2326         rtl8169_check_link_status(dev, tp, tp->mmio_addr);
2327 out:
2328         return retval;
2329
2330 err_release_ring_2:
2331         rtl8169_rx_clear(tp);
2332 err_free_rx_1:
2333         pci_free_consistent(pdev, R8169_RX_RING_BYTES, tp->RxDescArray,
2334                             tp->RxPhyAddr);
2335 err_free_tx_0:
2336         pci_free_consistent(pdev, R8169_TX_RING_BYTES, tp->TxDescArray,
2337                             tp->TxPhyAddr);
2338         goto out;
2339 }
2340
2341 static void rtl8169_hw_reset(void __iomem *ioaddr)
2342 {
2343         /* Disable interrupts */
2344         rtl8169_irq_mask_and_ack(ioaddr);
2345
2346         /* Reset the chipset */
2347         RTL_W8(ChipCmd, CmdReset);
2348
2349         /* PCI commit */
2350         RTL_R8(ChipCmd);
2351 }
2352
2353 static void rtl_set_rx_tx_config_registers(struct rtl8169_private *tp)
2354 {
2355         void __iomem *ioaddr = tp->mmio_addr;
2356         u32 cfg = rtl8169_rx_config;
2357
2358         cfg |= (RTL_R32(RxConfig) & rtl_chip_info[tp->chipset].RxConfigMask);
2359         RTL_W32(RxConfig, cfg);
2360
2361         /* Set DMA burst size and Interframe Gap Time */
2362         RTL_W32(TxConfig, (TX_DMA_BURST << TxDMAShift) |
2363                 (InterFrameGap << TxInterFrameGapShift));
2364 }
2365
2366 static void rtl_hw_start(struct net_device *dev)
2367 {
2368         struct rtl8169_private *tp = netdev_priv(dev);
2369         void __iomem *ioaddr = tp->mmio_addr;
2370         unsigned int i;
2371
2372         /* Soft reset the chip. */
2373         RTL_W8(ChipCmd, CmdReset);
2374
2375         /* Check that the chip has finished the reset. */
2376         for (i = 0; i < 100; i++) {
2377                 if ((RTL_R8(ChipCmd) & CmdReset) == 0)
2378                         break;
2379                 msleep_interruptible(1);
2380         }
2381
2382         tp->hw_start(dev);
2383
2384         netif_start_queue(dev);
2385 }
2386
2387
2388 static void rtl_set_rx_tx_desc_registers(struct rtl8169_private *tp,
2389                                          void __iomem *ioaddr)
2390 {
2391         /*
2392          * Magic spell: some iop3xx ARM board needs the TxDescAddrHigh
2393          * register to be written before TxDescAddrLow to work.
2394          * Switching from MMIO to I/O access fixes the issue as well.
2395          */
2396         RTL_W32(TxDescStartAddrHigh, ((u64) tp->TxPhyAddr) >> 32);
2397         RTL_W32(TxDescStartAddrLow, ((u64) tp->TxPhyAddr) & DMA_32BIT_MASK);
2398         RTL_W32(RxDescAddrHigh, ((u64) tp->RxPhyAddr) >> 32);
2399         RTL_W32(RxDescAddrLow, ((u64) tp->RxPhyAddr) & DMA_32BIT_MASK);
2400 }
2401
2402 static u16 rtl_rw_cpluscmd(void __iomem *ioaddr)
2403 {
2404         u16 cmd;
2405
2406         cmd = RTL_R16(CPlusCmd);
2407         RTL_W16(CPlusCmd, cmd);
2408         return cmd;
2409 }
2410
2411 static void rtl_set_rx_max_size(void __iomem *ioaddr)
2412 {
2413         /* Low hurts. Let's disable the filtering. */
2414         RTL_W16(RxMaxSize, 16383);
2415 }
2416
2417 static void rtl8169_set_magic_reg(void __iomem *ioaddr, unsigned mac_version)
2418 {
2419         struct {
2420                 u32 mac_version;
2421                 u32 clk;
2422                 u32 val;
2423         } cfg2_info [] = {
2424                 { RTL_GIGA_MAC_VER_05, PCI_Clock_33MHz, 0x000fff00 }, // 8110SCd
2425                 { RTL_GIGA_MAC_VER_05, PCI_Clock_66MHz, 0x000fffff },
2426                 { RTL_GIGA_MAC_VER_06, PCI_Clock_33MHz, 0x00ffff00 }, // 8110SCe
2427                 { RTL_GIGA_MAC_VER_06, PCI_Clock_66MHz, 0x00ffffff }
2428         }, *p = cfg2_info;
2429         unsigned int i;
2430         u32 clk;
2431
2432         clk = RTL_R8(Config2) & PCI_Clock_66MHz;
2433         for (i = 0; i < ARRAY_SIZE(cfg2_info); i++, p++) {
2434                 if ((p->mac_version == mac_version) && (p->clk == clk)) {
2435                         RTL_W32(0x7c, p->val);
2436                         break;
2437                 }
2438         }
2439 }
2440
2441 static void rtl_hw_start_8169(struct net_device *dev)
2442 {
2443         struct rtl8169_private *tp = netdev_priv(dev);
2444         void __iomem *ioaddr = tp->mmio_addr;
2445         struct pci_dev *pdev = tp->pci_dev;
2446
2447         if (tp->mac_version == RTL_GIGA_MAC_VER_05) {
2448                 RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) | PCIMulRW);
2449                 pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, 0x08);
2450         }
2451
2452         RTL_W8(Cfg9346, Cfg9346_Unlock);
2453         if ((tp->mac_version == RTL_GIGA_MAC_VER_01) ||
2454             (tp->mac_version == RTL_GIGA_MAC_VER_02) ||
2455             (tp->mac_version == RTL_GIGA_MAC_VER_03) ||
2456             (tp->mac_version == RTL_GIGA_MAC_VER_04))
2457                 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2458
2459         RTL_W8(EarlyTxThres, EarlyTxThld);
2460
2461         rtl_set_rx_max_size(ioaddr);
2462
2463         if ((tp->mac_version == RTL_GIGA_MAC_VER_01) ||
2464             (tp->mac_version == RTL_GIGA_MAC_VER_02) ||
2465             (tp->mac_version == RTL_GIGA_MAC_VER_03) ||
2466             (tp->mac_version == RTL_GIGA_MAC_VER_04))
2467                 rtl_set_rx_tx_config_registers(tp);
2468
2469         tp->cp_cmd |= rtl_rw_cpluscmd(ioaddr) | PCIMulRW;
2470
2471         if ((tp->mac_version == RTL_GIGA_MAC_VER_02) ||
2472             (tp->mac_version == RTL_GIGA_MAC_VER_03)) {
2473                 dprintk("Set MAC Reg C+CR Offset 0xE0. "
2474                         "Bit-3 and bit-14 MUST be 1\n");
2475                 tp->cp_cmd |= (1 << 14);
2476         }
2477
2478         RTL_W16(CPlusCmd, tp->cp_cmd);
2479
2480         rtl8169_set_magic_reg(ioaddr, tp->mac_version);
2481
2482         /*
2483          * Undocumented corner. Supposedly:
2484          * (TxTimer << 12) | (TxPackets << 8) | (RxTimer << 4) | RxPackets
2485          */
2486         RTL_W16(IntrMitigate, 0x0000);
2487
2488         rtl_set_rx_tx_desc_registers(tp, ioaddr);
2489
2490         if ((tp->mac_version != RTL_GIGA_MAC_VER_01) &&
2491             (tp->mac_version != RTL_GIGA_MAC_VER_02) &&
2492             (tp->mac_version != RTL_GIGA_MAC_VER_03) &&
2493             (tp->mac_version != RTL_GIGA_MAC_VER_04)) {
2494                 RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2495                 rtl_set_rx_tx_config_registers(tp);
2496         }
2497
2498         RTL_W8(Cfg9346, Cfg9346_Lock);
2499
2500         /* Initially a 10 us delay. Turned it into a PCI commit. - FR */
2501         RTL_R8(IntrMask);
2502
2503         RTL_W32(RxMissed, 0);
2504
2505         rtl_set_rx_mode(dev);
2506
2507         /* no early-rx interrupts */
2508         RTL_W16(MultiIntr, RTL_R16(MultiIntr) & 0xF000);
2509
2510         /* Enable all known interrupts by setting the interrupt mask. */
2511         RTL_W16(IntrMask, tp->intr_event);
2512 }
2513
2514 static void rtl_tx_performance_tweak(struct pci_dev *pdev, u16 force)
2515 {
2516         struct net_device *dev = pci_get_drvdata(pdev);
2517         struct rtl8169_private *tp = netdev_priv(dev);
2518         int cap = tp->pcie_cap;
2519
2520         if (cap) {
2521                 u16 ctl;
2522
2523                 pci_read_config_word(pdev, cap + PCI_EXP_DEVCTL, &ctl);
2524                 ctl = (ctl & ~PCI_EXP_DEVCTL_READRQ) | force;
2525                 pci_write_config_word(pdev, cap + PCI_EXP_DEVCTL, ctl);
2526         }
2527 }
2528
2529 static void rtl_csi_access_enable(void __iomem *ioaddr)
2530 {
2531         u32 csi;
2532
2533         csi = rtl_csi_read(ioaddr, 0x070c) & 0x00ffffff;
2534         rtl_csi_write(ioaddr, 0x070c, csi | 0x27000000);
2535 }
2536
2537 struct ephy_info {
2538         unsigned int offset;
2539         u16 mask;
2540         u16 bits;
2541 };
2542
2543 static void rtl_ephy_init(void __iomem *ioaddr, struct ephy_info *e, int len)
2544 {
2545         u16 w;
2546
2547         while (len-- > 0) {
2548                 w = (rtl_ephy_read(ioaddr, e->offset) & ~e->mask) | e->bits;
2549                 rtl_ephy_write(ioaddr, e->offset, w);
2550                 e++;
2551         }
2552 }
2553
2554 static void rtl_disable_clock_request(struct pci_dev *pdev)
2555 {
2556         struct net_device *dev = pci_get_drvdata(pdev);
2557         struct rtl8169_private *tp = netdev_priv(dev);
2558         int cap = tp->pcie_cap;
2559
2560         if (cap) {
2561                 u16 ctl;
2562
2563                 pci_read_config_word(pdev, cap + PCI_EXP_LNKCTL, &ctl);
2564                 ctl &= ~PCI_EXP_LNKCTL_CLKREQ_EN;
2565                 pci_write_config_word(pdev, cap + PCI_EXP_LNKCTL, ctl);
2566         }
2567 }
2568
2569 #define R8168_CPCMD_QUIRK_MASK (\
2570         EnableBist | \
2571         Mac_dbgo_oe | \
2572         Force_half_dup | \
2573         Force_rxflow_en | \
2574         Force_txflow_en | \
2575         Cxpl_dbg_sel | \
2576         ASF | \
2577         PktCntrDisable | \
2578         Mac_dbgo_sel)
2579
2580 static void rtl_hw_start_8168bb(void __iomem *ioaddr, struct pci_dev *pdev)
2581 {
2582         RTL_W8(Config3, RTL_R8(Config3) & ~Beacon_en);
2583
2584         RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R8168_CPCMD_QUIRK_MASK);
2585
2586         rtl_tx_performance_tweak(pdev,
2587                 (0x5 << MAX_READ_REQUEST_SHIFT) | PCI_EXP_DEVCTL_NOSNOOP_EN);
2588 }
2589
2590 static void rtl_hw_start_8168bef(void __iomem *ioaddr, struct pci_dev *pdev)
2591 {
2592         rtl_hw_start_8168bb(ioaddr, pdev);
2593
2594         RTL_W8(EarlyTxThres, EarlyTxThld);
2595
2596         RTL_W8(Config4, RTL_R8(Config4) & ~(1 << 0));
2597 }
2598
2599 static void __rtl_hw_start_8168cp(void __iomem *ioaddr, struct pci_dev *pdev)
2600 {
2601         RTL_W8(Config1, RTL_R8(Config1) | Speed_down);
2602
2603         RTL_W8(Config3, RTL_R8(Config3) & ~Beacon_en);
2604
2605         rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT);
2606
2607         rtl_disable_clock_request(pdev);
2608
2609         RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R8168_CPCMD_QUIRK_MASK);
2610 }
2611
2612 static void rtl_hw_start_8168cp_1(void __iomem *ioaddr, struct pci_dev *pdev)
2613 {
2614         static struct ephy_info e_info_8168cp[] = {
2615                 { 0x01, 0,      0x0001 },
2616                 { 0x02, 0x0800, 0x1000 },
2617                 { 0x03, 0,      0x0042 },
2618                 { 0x06, 0x0080, 0x0000 },
2619                 { 0x07, 0,      0x2000 }
2620         };
2621
2622         rtl_csi_access_enable(ioaddr);
2623
2624         rtl_ephy_init(ioaddr, e_info_8168cp, ARRAY_SIZE(e_info_8168cp));
2625
2626         __rtl_hw_start_8168cp(ioaddr, pdev);
2627 }
2628
2629 static void rtl_hw_start_8168cp_2(void __iomem *ioaddr, struct pci_dev *pdev)
2630 {
2631         rtl_csi_access_enable(ioaddr);
2632
2633         RTL_W8(Config3, RTL_R8(Config3) & ~Beacon_en);
2634
2635         rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT);
2636
2637         RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R8168_CPCMD_QUIRK_MASK);
2638 }
2639
2640 static void rtl_hw_start_8168cp_3(void __iomem *ioaddr, struct pci_dev *pdev)
2641 {
2642         rtl_csi_access_enable(ioaddr);
2643
2644         RTL_W8(Config3, RTL_R8(Config3) & ~Beacon_en);
2645
2646         /* Magic. */
2647         RTL_W8(DBG_REG, 0x20);
2648
2649         RTL_W8(EarlyTxThres, EarlyTxThld);
2650
2651         rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT);
2652
2653         RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R8168_CPCMD_QUIRK_MASK);
2654 }
2655
2656 static void rtl_hw_start_8168c_1(void __iomem *ioaddr, struct pci_dev *pdev)
2657 {
2658         static struct ephy_info e_info_8168c_1[] = {
2659                 { 0x02, 0x0800, 0x1000 },
2660                 { 0x03, 0,      0x0002 },
2661                 { 0x06, 0x0080, 0x0000 }
2662         };
2663
2664         rtl_csi_access_enable(ioaddr);
2665
2666         RTL_W8(DBG_REG, 0x06 | FIX_NAK_1 | FIX_NAK_2);
2667
2668         rtl_ephy_init(ioaddr, e_info_8168c_1, ARRAY_SIZE(e_info_8168c_1));
2669
2670         __rtl_hw_start_8168cp(ioaddr, pdev);
2671 }
2672
2673 static void rtl_hw_start_8168c_2(void __iomem *ioaddr, struct pci_dev *pdev)
2674 {
2675         static struct ephy_info e_info_8168c_2[] = {
2676                 { 0x01, 0,      0x0001 },
2677                 { 0x03, 0x0400, 0x0220 }
2678         };
2679
2680         rtl_csi_access_enable(ioaddr);
2681
2682         rtl_ephy_init(ioaddr, e_info_8168c_2, ARRAY_SIZE(e_info_8168c_2));
2683
2684         __rtl_hw_start_8168cp(ioaddr, pdev);
2685 }
2686
2687 static void rtl_hw_start_8168c_3(void __iomem *ioaddr, struct pci_dev *pdev)
2688 {
2689         rtl_hw_start_8168c_2(ioaddr, pdev);
2690 }
2691
2692 static void rtl_hw_start_8168c_4(void __iomem *ioaddr, struct pci_dev *pdev)
2693 {
2694         rtl_csi_access_enable(ioaddr);
2695
2696         __rtl_hw_start_8168cp(ioaddr, pdev);
2697 }
2698
2699 static void rtl_hw_start_8168d(void __iomem *ioaddr, struct pci_dev *pdev)
2700 {
2701         rtl_csi_access_enable(ioaddr);
2702
2703         rtl_disable_clock_request(pdev);
2704
2705         RTL_W8(EarlyTxThres, EarlyTxThld);
2706
2707         rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT);
2708
2709         RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R8168_CPCMD_QUIRK_MASK);
2710 }
2711
2712 static void rtl_hw_start_8168(struct net_device *dev)
2713 {
2714         struct rtl8169_private *tp = netdev_priv(dev);
2715         void __iomem *ioaddr = tp->mmio_addr;
2716         struct pci_dev *pdev = tp->pci_dev;
2717
2718         RTL_W8(Cfg9346, Cfg9346_Unlock);
2719
2720         RTL_W8(EarlyTxThres, EarlyTxThld);
2721
2722         rtl_set_rx_max_size(ioaddr);
2723
2724         tp->cp_cmd |= RTL_R16(CPlusCmd) | PktCntrDisable | INTT_1;
2725
2726         RTL_W16(CPlusCmd, tp->cp_cmd);
2727
2728         RTL_W16(IntrMitigate, 0x5151);
2729
2730         /* Work around for RxFIFO overflow. */
2731         if (tp->mac_version == RTL_GIGA_MAC_VER_11) {
2732                 tp->intr_event |= RxFIFOOver | PCSTimeout;
2733                 tp->intr_event &= ~RxOverflow;
2734         }
2735
2736         rtl_set_rx_tx_desc_registers(tp, ioaddr);
2737
2738         rtl_set_rx_mode(dev);
2739
2740         RTL_W32(TxConfig, (TX_DMA_BURST << TxDMAShift) |
2741                 (InterFrameGap << TxInterFrameGapShift));
2742
2743         RTL_R8(IntrMask);
2744
2745         switch (tp->mac_version) {
2746         case RTL_GIGA_MAC_VER_11:
2747                 rtl_hw_start_8168bb(ioaddr, pdev);
2748         break;
2749
2750         case RTL_GIGA_MAC_VER_12:
2751         case RTL_GIGA_MAC_VER_17:
2752                 rtl_hw_start_8168bef(ioaddr, pdev);
2753         break;
2754
2755         case RTL_GIGA_MAC_VER_18:
2756                 rtl_hw_start_8168cp_1(ioaddr, pdev);
2757         break;
2758
2759         case RTL_GIGA_MAC_VER_19:
2760                 rtl_hw_start_8168c_1(ioaddr, pdev);
2761         break;
2762
2763         case RTL_GIGA_MAC_VER_20:
2764                 rtl_hw_start_8168c_2(ioaddr, pdev);
2765         break;
2766
2767         case RTL_GIGA_MAC_VER_21:
2768                 rtl_hw_start_8168c_3(ioaddr, pdev);
2769         break;
2770
2771         case RTL_GIGA_MAC_VER_22:
2772                 rtl_hw_start_8168c_4(ioaddr, pdev);
2773         break;
2774
2775         case RTL_GIGA_MAC_VER_23:
2776                 rtl_hw_start_8168cp_2(ioaddr, pdev);
2777         break;
2778
2779         case RTL_GIGA_MAC_VER_24:
2780                 rtl_hw_start_8168cp_3(ioaddr, pdev);
2781         break;
2782
2783         case RTL_GIGA_MAC_VER_25:
2784                 rtl_hw_start_8168d(ioaddr, pdev);
2785         break;
2786
2787         default:
2788                 printk(KERN_ERR PFX "%s: unknown chipset (mac_version = %d).\n",
2789                         dev->name, tp->mac_version);
2790         break;
2791         }
2792
2793         RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2794
2795         RTL_W8(Cfg9346, Cfg9346_Lock);
2796
2797         RTL_W16(MultiIntr, RTL_R16(MultiIntr) & 0xF000);
2798
2799         RTL_W16(IntrMask, tp->intr_event);
2800 }
2801
2802 #define R810X_CPCMD_QUIRK_MASK (\
2803         EnableBist | \
2804         Mac_dbgo_oe | \
2805         Force_half_dup | \
2806         Force_half_dup | \
2807         Force_txflow_en | \
2808         Cxpl_dbg_sel | \
2809         ASF | \
2810         PktCntrDisable | \
2811         PCIDAC | \
2812         PCIMulRW)
2813
2814 static void rtl_hw_start_8102e_1(void __iomem *ioaddr, struct pci_dev *pdev)
2815 {
2816         static struct ephy_info e_info_8102e_1[] = {
2817                 { 0x01, 0, 0x6e65 },
2818                 { 0x02, 0, 0x091f },
2819                 { 0x03, 0, 0xc2f9 },
2820                 { 0x06, 0, 0xafb5 },
2821                 { 0x07, 0, 0x0e00 },
2822                 { 0x19, 0, 0xec80 },
2823                 { 0x01, 0, 0x2e65 },
2824                 { 0x01, 0, 0x6e65 }
2825         };
2826         u8 cfg1;
2827
2828         rtl_csi_access_enable(ioaddr);
2829
2830         RTL_W8(DBG_REG, FIX_NAK_1);
2831
2832         rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT);
2833
2834         RTL_W8(Config1,
2835                LEDS1 | LEDS0 | Speed_down | MEMMAP | IOMAP | VPD | PMEnable);
2836         RTL_W8(Config3, RTL_R8(Config3) & ~Beacon_en);
2837
2838         cfg1 = RTL_R8(Config1);
2839         if ((cfg1 & LEDS0) && (cfg1 & LEDS1))
2840                 RTL_W8(Config1, cfg1 & ~LEDS0);
2841
2842         RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R810X_CPCMD_QUIRK_MASK);
2843
2844         rtl_ephy_init(ioaddr, e_info_8102e_1, ARRAY_SIZE(e_info_8102e_1));
2845 }
2846
2847 static void rtl_hw_start_8102e_2(void __iomem *ioaddr, struct pci_dev *pdev)
2848 {
2849         rtl_csi_access_enable(ioaddr);
2850
2851         rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT);
2852
2853         RTL_W8(Config1, MEMMAP | IOMAP | VPD | PMEnable);
2854         RTL_W8(Config3, RTL_R8(Config3) & ~Beacon_en);
2855
2856         RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R810X_CPCMD_QUIRK_MASK);
2857 }
2858
2859 static void rtl_hw_start_8102e_3(void __iomem *ioaddr, struct pci_dev *pdev)
2860 {
2861         rtl_hw_start_8102e_2(ioaddr, pdev);
2862
2863         rtl_ephy_write(ioaddr, 0x03, 0xc2f9);
2864 }
2865
2866 static void rtl_hw_start_8101(struct net_device *dev)
2867 {
2868         struct rtl8169_private *tp = netdev_priv(dev);
2869         void __iomem *ioaddr = tp->mmio_addr;
2870         struct pci_dev *pdev = tp->pci_dev;
2871
2872         if ((tp->mac_version == RTL_GIGA_MAC_VER_13) ||
2873             (tp->mac_version == RTL_GIGA_MAC_VER_16)) {
2874                 int cap = tp->pcie_cap;
2875
2876                 if (cap) {
2877                         pci_write_config_word(pdev, cap + PCI_EXP_DEVCTL,
2878                                               PCI_EXP_DEVCTL_NOSNOOP_EN);
2879                 }
2880         }
2881
2882         switch (tp->mac_version) {
2883         case RTL_GIGA_MAC_VER_07:
2884                 rtl_hw_start_8102e_1(ioaddr, pdev);
2885                 break;
2886
2887         case RTL_GIGA_MAC_VER_08:
2888                 rtl_hw_start_8102e_3(ioaddr, pdev);
2889                 break;
2890
2891         case RTL_GIGA_MAC_VER_09:
2892                 rtl_hw_start_8102e_2(ioaddr, pdev);
2893                 break;
2894         }
2895
2896         RTL_W8(Cfg9346, Cfg9346_Unlock);
2897
2898         RTL_W8(EarlyTxThres, EarlyTxThld);
2899
2900         rtl_set_rx_max_size(ioaddr);
2901
2902         tp->cp_cmd |= rtl_rw_cpluscmd(ioaddr) | PCIMulRW;
2903
2904         RTL_W16(CPlusCmd, tp->cp_cmd);
2905
2906         RTL_W16(IntrMitigate, 0x0000);
2907
2908         rtl_set_rx_tx_desc_registers(tp, ioaddr);
2909
2910         RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2911         rtl_set_rx_tx_config_registers(tp);
2912
2913         RTL_W8(Cfg9346, Cfg9346_Lock);
2914
2915         RTL_R8(IntrMask);
2916
2917         rtl_set_rx_mode(dev);
2918
2919         RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
2920
2921         RTL_W16(MultiIntr, RTL_R16(MultiIntr) & 0xf000);
2922
2923         RTL_W16(IntrMask, tp->intr_event);
2924 }
2925
2926 static int rtl8169_change_mtu(struct net_device *dev, int new_mtu)
2927 {
2928         struct rtl8169_private *tp = netdev_priv(dev);
2929         int ret = 0;
2930
2931         if (new_mtu < ETH_ZLEN || new_mtu > SafeMtu)
2932                 return -EINVAL;
2933
2934         dev->mtu = new_mtu;
2935
2936         if (!netif_running(dev))
2937                 goto out;
2938
2939         rtl8169_down(dev);
2940
2941         rtl8169_set_rxbufsize(tp, dev);
2942
2943         ret = rtl8169_init_ring(dev);
2944         if (ret < 0)
2945                 goto out;
2946
2947         napi_enable(&tp->napi);
2948
2949         rtl_hw_start(dev);
2950
2951         rtl8169_request_timer(dev);
2952
2953 out:
2954         return ret;
2955 }
2956
2957 static inline void rtl8169_make_unusable_by_asic(struct RxDesc *desc)
2958 {
2959         desc->addr = cpu_to_le64(0x0badbadbadbadbadull);
2960         desc->opts1 &= ~cpu_to_le32(DescOwn | RsvdMask);
2961 }
2962
2963 static void rtl8169_free_rx_skb(struct rtl8169_private *tp,
2964                                 struct sk_buff **sk_buff, struct RxDesc *desc)
2965 {
2966         struct pci_dev *pdev = tp->pci_dev;
2967
2968         pci_unmap_single(pdev, le64_to_cpu(desc->addr), tp->rx_buf_sz,
2969                          PCI_DMA_FROMDEVICE);
2970         dev_kfree_skb(*sk_buff);
2971         *sk_buff = NULL;
2972         rtl8169_make_unusable_by_asic(desc);
2973 }
2974
2975 static inline void rtl8169_mark_to_asic(struct RxDesc *desc, u32 rx_buf_sz)
2976 {
2977         u32 eor = le32_to_cpu(desc->opts1) & RingEnd;
2978
2979         desc->opts1 = cpu_to_le32(DescOwn | eor | rx_buf_sz);
2980 }
2981
2982 static inline void rtl8169_map_to_asic(struct RxDesc *desc, dma_addr_t mapping,
2983                                        u32 rx_buf_sz)
2984 {
2985         desc->addr = cpu_to_le64(mapping);
2986         wmb();
2987         rtl8169_mark_to_asic(desc, rx_buf_sz);
2988 }
2989
2990 static struct sk_buff *rtl8169_alloc_rx_skb(struct pci_dev *pdev,
2991                                             struct net_device *dev,
2992                                             struct RxDesc *desc, int rx_buf_sz,
2993                                             unsigned int align)
2994 {
2995         struct sk_buff *skb;
2996         dma_addr_t mapping;
2997         unsigned int pad;
2998
2999         pad = align ? align : NET_IP_ALIGN;
3000
3001         skb = netdev_alloc_skb(dev, rx_buf_sz + pad);
3002         if (!skb)
3003                 goto err_out;
3004
3005         skb_reserve(skb, align ? ((pad - 1) & (unsigned long)skb->data) : pad);
3006
3007         mapping = pci_map_single(pdev, skb->data, rx_buf_sz,
3008                                  PCI_DMA_FROMDEVICE);
3009
3010         rtl8169_map_to_asic(desc, mapping, rx_buf_sz);
3011 out:
3012         return skb;
3013
3014 err_out:
3015         rtl8169_make_unusable_by_asic(desc);
3016         goto out;
3017 }
3018
3019 static void rtl8169_rx_clear(struct rtl8169_private *tp)
3020 {
3021         unsigned int i;
3022
3023         for (i = 0; i < NUM_RX_DESC; i++) {
3024                 if (tp->Rx_skbuff[i]) {
3025                         rtl8169_free_rx_skb(tp, tp->Rx_skbuff + i,
3026                                             tp->RxDescArray + i);
3027                 }
3028         }
3029 }
3030
3031 static u32 rtl8169_rx_fill(struct rtl8169_private *tp, struct net_device *dev,
3032                            u32 start, u32 end)
3033 {
3034         u32 cur;
3035
3036         for (cur = start; end - cur != 0; cur++) {
3037                 struct sk_buff *skb;
3038                 unsigned int i = cur % NUM_RX_DESC;
3039
3040                 WARN_ON((s32)(end - cur) < 0);
3041
3042                 if (tp->Rx_skbuff[i])
3043                         continue;
3044
3045                 skb = rtl8169_alloc_rx_skb(tp->pci_dev, dev,
3046                                            tp->RxDescArray + i,
3047                                            tp->rx_buf_sz, tp->align);
3048                 if (!skb)
3049                         break;
3050
3051                 tp->Rx_skbuff[i] = skb;
3052         }
3053         return cur - start;
3054 }
3055
3056 static inline void rtl8169_mark_as_last_descriptor(struct RxDesc *desc)
3057 {
3058         desc->opts1 |= cpu_to_le32(RingEnd);
3059 }
3060
3061 static void rtl8169_init_ring_indexes(struct rtl8169_private *tp)
3062 {
3063         tp->dirty_tx = tp->dirty_rx = tp->cur_tx = tp->cur_rx = 0;
3064 }
3065
3066 static int rtl8169_init_ring(struct net_device *dev)
3067 {
3068         struct rtl8169_private *tp = netdev_priv(dev);
3069
3070         rtl8169_init_ring_indexes(tp);
3071
3072         memset(tp->tx_skb, 0x0, NUM_TX_DESC * sizeof(struct ring_info));
3073         memset(tp->Rx_skbuff, 0x0, NUM_RX_DESC * sizeof(struct sk_buff *));
3074
3075         if (rtl8169_rx_fill(tp, dev, 0, NUM_RX_DESC) != NUM_RX_DESC)
3076                 goto err_out;
3077
3078         rtl8169_mark_as_last_descriptor(tp->RxDescArray + NUM_RX_DESC - 1);
3079
3080         return 0;
3081
3082 err_out:
3083         rtl8169_rx_clear(tp);
3084         return -ENOMEM;
3085 }
3086
3087 static void rtl8169_unmap_tx_skb(struct pci_dev *pdev, struct ring_info *tx_skb,
3088                                  struct TxDesc *desc)
3089 {
3090         unsigned int len = tx_skb->len;
3091
3092         pci_unmap_single(pdev, le64_to_cpu(desc->addr), len, PCI_DMA_TODEVICE);
3093         desc->opts1 = 0x00;
3094         desc->opts2 = 0x00;
3095         desc->addr = 0x00;
3096         tx_skb->len = 0;
3097 }
3098
3099 static void rtl8169_tx_clear(struct rtl8169_private *tp)
3100 {
3101         unsigned int i;
3102
3103         for (i = tp->dirty_tx; i < tp->dirty_tx + NUM_TX_DESC; i++) {
3104                 unsigned int entry = i % NUM_TX_DESC;
3105                 struct ring_info *tx_skb = tp->tx_skb + entry;
3106                 unsigned int len = tx_skb->len;
3107
3108                 if (len) {
3109                         struct sk_buff *skb = tx_skb->skb;
3110
3111                         rtl8169_unmap_tx_skb(tp->pci_dev, tx_skb,
3112                                              tp->TxDescArray + entry);
3113                         if (skb) {
3114                                 dev_kfree_skb(skb);
3115                                 tx_skb->skb = NULL;
3116                         }
3117                         tp->dev->stats.tx_dropped++;
3118                 }
3119         }
3120         tp->cur_tx = tp->dirty_tx = 0;
3121 }
3122
3123 static void rtl8169_schedule_work(struct net_device *dev, work_func_t task)
3124 {
3125         struct rtl8169_private *tp = netdev_priv(dev);
3126
3127         PREPARE_DELAYED_WORK(&tp->task, task);
3128         schedule_delayed_work(&tp->task, 4);
3129 }
3130
3131 static void rtl8169_wait_for_quiescence(struct net_device *dev)
3132 {
3133         struct rtl8169_private *tp = netdev_priv(dev);
3134         void __iomem *ioaddr = tp->mmio_addr;
3135
3136         synchronize_irq(dev->irq);
3137
3138         /* Wait for any pending NAPI task to complete */
3139         napi_disable(&tp->napi);
3140
3141         rtl8169_irq_mask_and_ack(ioaddr);
3142
3143         tp->intr_mask = 0xffff;
3144         RTL_W16(IntrMask, tp->intr_event);
3145         napi_enable(&tp->napi);
3146 }
3147
3148 static void rtl8169_reinit_task(struct work_struct *work)
3149 {
3150         struct rtl8169_private *tp =
3151                 container_of(work, struct rtl8169_private, task.work);
3152         struct net_device *dev = tp->dev;
3153         int ret;
3154
3155         rtnl_lock();
3156
3157         if (!netif_running(dev))
3158                 goto out_unlock;
3159
3160         rtl8169_wait_for_quiescence(dev);
3161         rtl8169_close(dev);
3162
3163         ret = rtl8169_open(dev);
3164         if (unlikely(ret < 0)) {
3165                 if (net_ratelimit() && netif_msg_drv(tp)) {
3166                         printk(KERN_ERR PFX "%s: reinit failure (status = %d)."
3167                                " Rescheduling.\n", dev->name, ret);
3168                 }
3169                 rtl8169_schedule_work(dev, rtl8169_reinit_task);
3170         }
3171
3172 out_unlock:
3173         rtnl_unlock();
3174 }
3175
3176 static void rtl8169_reset_task(struct work_struct *work)
3177 {
3178         struct rtl8169_private *tp =
3179                 container_of(work, struct rtl8169_private, task.work);
3180         struct net_device *dev = tp->dev;
3181
3182         rtnl_lock();
3183
3184         if (!netif_running(dev))
3185                 goto out_unlock;
3186
3187         rtl8169_wait_for_quiescence(dev);
3188
3189         rtl8169_rx_interrupt(dev, tp, tp->mmio_addr, ~(u32)0);
3190         rtl8169_tx_clear(tp);
3191
3192         if (tp->dirty_rx == tp->cur_rx) {
3193                 rtl8169_init_ring_indexes(tp);
3194                 rtl_hw_start(dev);
3195                 netif_wake_queue(dev);
3196                 rtl8169_check_link_status(dev, tp, tp->mmio_addr);
3197         } else {
3198                 if (net_ratelimit() && netif_msg_intr(tp)) {
3199                         printk(KERN_EMERG PFX "%s: Rx buffers shortage\n",
3200                                dev->name);
3201                 }
3202                 rtl8169_schedule_work(dev, rtl8169_reset_task);
3203         }
3204
3205 out_unlock:
3206         rtnl_unlock();
3207 }
3208
3209 static void rtl8169_tx_timeout(struct net_device *dev)
3210 {
3211         struct rtl8169_private *tp = netdev_priv(dev);
3212
3213         rtl8169_hw_reset(tp->mmio_addr);
3214
3215         /* Let's wait a bit while any (async) irq lands on */
3216         rtl8169_schedule_work(dev, rtl8169_reset_task);
3217 }
3218
3219 static int rtl8169_xmit_frags(struct rtl8169_private *tp, struct sk_buff *skb,
3220                               u32 opts1)
3221 {
3222         struct skb_shared_info *info = skb_shinfo(skb);
3223         unsigned int cur_frag, entry;
3224         struct TxDesc * uninitialized_var(txd);
3225
3226         entry = tp->cur_tx;
3227         for (cur_frag = 0; cur_frag < info->nr_frags; cur_frag++) {
3228                 skb_frag_t *frag = info->frags + cur_frag;
3229                 dma_addr_t mapping;
3230                 u32 status, len;
3231                 void *addr;
3232
3233                 entry = (entry + 1) % NUM_TX_DESC;
3234
3235                 txd = tp->TxDescArray + entry;
3236                 len = frag->size;
3237                 addr = ((void *) page_address(frag->page)) + frag->page_offset;
3238                 mapping = pci_map_single(tp->pci_dev, addr, len, PCI_DMA_TODEVICE);
3239
3240                 /* anti gcc 2.95.3 bugware (sic) */
3241                 status = opts1 | len | (RingEnd * !((entry + 1) % NUM_TX_DESC));
3242
3243                 txd->opts1 = cpu_to_le32(status);
3244                 txd->addr = cpu_to_le64(mapping);
3245
3246                 tp->tx_skb[entry].len = len;
3247         }
3248
3249         if (cur_frag) {
3250                 tp->tx_skb[entry].skb = skb;
3251                 txd->opts1 |= cpu_to_le32(LastFrag);
3252         }
3253
3254         return cur_frag;
3255 }
3256
3257 static inline u32 rtl8169_tso_csum(struct sk_buff *skb, struct net_device *dev)
3258 {
3259         if (dev->features & NETIF_F_TSO) {
3260                 u32 mss = skb_shinfo(skb)->gso_size;
3261
3262                 if (mss)
3263                         return LargeSend | ((mss & MSSMask) << MSSShift);
3264         }
3265         if (skb->ip_summed == CHECKSUM_PARTIAL) {
3266                 const struct iphdr *ip = ip_hdr(skb);
3267
3268                 if (ip->protocol == IPPROTO_TCP)
3269                         return IPCS | TCPCS;
3270                 else if (ip->protocol == IPPROTO_UDP)
3271                         return IPCS | UDPCS;
3272                 WARN_ON(1);     /* we need a WARN() */
3273         }
3274         return 0;
3275 }
3276
3277 static int rtl8169_start_xmit(struct sk_buff *skb, struct net_device *dev)
3278 {
3279         struct rtl8169_private *tp = netdev_priv(dev);
3280         unsigned int frags, entry = tp->cur_tx % NUM_TX_DESC;
3281         struct TxDesc *txd = tp->TxDescArray + entry;
3282         void __iomem *ioaddr = tp->mmio_addr;
3283         dma_addr_t mapping;
3284         u32 status, len;
3285         u32 opts1;
3286         int ret = NETDEV_TX_OK;
3287
3288         if (unlikely(TX_BUFFS_AVAIL(tp) < skb_shinfo(skb)->nr_frags)) {
3289                 if (netif_msg_drv(tp)) {
3290                         printk(KERN_ERR
3291                                "%s: BUG! Tx Ring full when queue awake!\n",
3292                                dev->name);
3293                 }
3294                 goto err_stop;
3295         }
3296
3297         if (unlikely(le32_to_cpu(txd->opts1) & DescOwn))
3298                 goto err_stop;
3299
3300         opts1 = DescOwn | rtl8169_tso_csum(skb, dev);
3301
3302         frags = rtl8169_xmit_frags(tp, skb, opts1);
3303         if (frags) {
3304                 len = skb_headlen(skb);
3305                 opts1 |= FirstFrag;
3306         } else {
3307                 len = skb->len;
3308
3309                 if (unlikely(len < ETH_ZLEN)) {
3310                         if (skb_padto(skb, ETH_ZLEN))
3311                                 goto err_update_stats;
3312                         len = ETH_ZLEN;
3313                 }
3314
3315                 opts1 |= FirstFrag | LastFrag;
3316                 tp->tx_skb[entry].skb = skb;
3317         }
3318
3319         mapping = pci_map_single(tp->pci_dev, skb->data, len, PCI_DMA_TODEVICE);
3320
3321         tp->tx_skb[entry].len = len;
3322         txd->addr = cpu_to_le64(mapping);
3323         txd->opts2 = cpu_to_le32(rtl8169_tx_vlan_tag(tp, skb));
3324
3325         wmb();
3326
3327         /* anti gcc 2.95.3 bugware (sic) */
3328         status = opts1 | len | (RingEnd * !((entry + 1) % NUM_TX_DESC));
3329         txd->opts1 = cpu_to_le32(status);
3330
3331         dev->trans_start = jiffies;
3332
3333         tp->cur_tx += frags + 1;
3334
3335         smp_wmb();
3336
3337         RTL_W8(TxPoll, NPQ);    /* set polling bit */
3338
3339         if (TX_BUFFS_AVAIL(tp) < MAX_SKB_FRAGS) {
3340                 netif_stop_queue(dev);
3341                 smp_rmb();
3342                 if (TX_BUFFS_AVAIL(tp) >= MAX_SKB_FRAGS)
3343                         netif_wake_queue(dev);
3344         }
3345
3346 out:
3347         return ret;
3348
3349 err_stop:
3350         netif_stop_queue(dev);
3351         ret = NETDEV_TX_BUSY;
3352 err_update_stats:
3353         dev->stats.tx_dropped++;
3354         goto out;
3355 }
3356
3357 static void rtl8169_pcierr_interrupt(struct net_device *dev)
3358 {
3359         struct rtl8169_private *tp = netdev_priv(dev);
3360         struct pci_dev *pdev = tp->pci_dev;
3361         void __iomem *ioaddr = tp->mmio_addr;
3362         u16 pci_status, pci_cmd;
3363
3364         pci_read_config_word(pdev, PCI_COMMAND, &pci_cmd);
3365         pci_read_config_word(pdev, PCI_STATUS, &pci_status);
3366
3367         if (netif_msg_intr(tp)) {
3368                 printk(KERN_ERR
3369                        "%s: PCI error (cmd = 0x%04x, status = 0x%04x).\n",
3370                        dev->name, pci_cmd, pci_status);
3371         }
3372
3373         /*
3374          * The recovery sequence below admits a very elaborated explanation:
3375          * - it seems to work;
3376          * - I did not see what else could be done;
3377          * - it makes iop3xx happy.
3378          *
3379          * Feel free to adjust to your needs.
3380          */
3381         if (pdev->broken_parity_status)
3382                 pci_cmd &= ~PCI_COMMAND_PARITY;
3383         else
3384                 pci_cmd |= PCI_COMMAND_SERR | PCI_COMMAND_PARITY;
3385
3386         pci_write_config_word(pdev, PCI_COMMAND, pci_cmd);
3387
3388         pci_write_config_word(pdev, PCI_STATUS,
3389                 pci_status & (PCI_STATUS_DETECTED_PARITY |
3390                 PCI_STATUS_SIG_SYSTEM_ERROR | PCI_STATUS_REC_MASTER_ABORT |
3391                 PCI_STATUS_REC_TARGET_ABORT | PCI_STATUS_SIG_TARGET_ABORT));
3392
3393         /* The infamous DAC f*ckup only happens at boot time */
3394         if ((tp->cp_cmd & PCIDAC) && !tp->dirty_rx && !tp->cur_rx) {
3395                 if (netif_msg_intr(tp))
3396                         printk(KERN_INFO "%s: disabling PCI DAC.\n", dev->name);
3397                 tp->cp_cmd &= ~PCIDAC;
3398                 RTL_W16(CPlusCmd, tp->cp_cmd);
3399                 dev->features &= ~NETIF_F_HIGHDMA;
3400         }
3401
3402         rtl8169_hw_reset(ioaddr);
3403
3404         rtl8169_schedule_work(dev, rtl8169_reinit_task);
3405 }
3406
3407 static void rtl8169_tx_interrupt(struct net_device *dev,
3408                                  struct rtl8169_private *tp,
3409                                  void __iomem *ioaddr)
3410 {
3411         unsigned int dirty_tx, tx_left;
3412
3413         dirty_tx = tp->dirty_tx;
3414         smp_rmb();
3415         tx_left = tp->cur_tx - dirty_tx;
3416
3417         while (tx_left > 0) {
3418                 unsigned int entry = dirty_tx % NUM_TX_DESC;
3419                 struct ring_info *tx_skb = tp->tx_skb + entry;
3420                 u32 len = tx_skb->len;
3421                 u32 status;
3422
3423                 rmb();
3424                 status = le32_to_cpu(tp->TxDescArray[entry].opts1);
3425                 if (status & DescOwn)
3426                         break;
3427
3428                 dev->stats.tx_bytes += len;
3429                 dev->stats.tx_packets++;
3430
3431                 rtl8169_unmap_tx_skb(tp->pci_dev, tx_skb, tp->TxDescArray + entry);
3432
3433                 if (status & LastFrag) {
3434                         dev_kfree_skb_irq(tx_skb->skb);
3435                         tx_skb->skb = NULL;
3436                 }
3437                 dirty_tx++;
3438                 tx_left--;
3439         }
3440
3441         if (tp->dirty_tx != dirty_tx) {
3442                 tp->dirty_tx = dirty_tx;
3443                 smp_wmb();
3444                 if (netif_queue_stopped(dev) &&
3445                     (TX_BUFFS_AVAIL(tp) >= MAX_SKB_FRAGS)) {
3446                         netif_wake_queue(dev);
3447                 }
3448                 /*
3449                  * 8168 hack: TxPoll requests are lost when the Tx packets are
3450                  * too close. Let's kick an extra TxPoll request when a burst
3451                  * of start_xmit activity is detected (if it is not detected,
3452                  * it is slow enough). -- FR
3453                  */
3454                 smp_rmb();
3455                 if (tp->cur_tx != dirty_tx)
3456                         RTL_W8(TxPoll, NPQ);
3457         }
3458 }
3459
3460 static inline int rtl8169_fragmented_frame(u32 status)
3461 {
3462         return (status & (FirstFrag | LastFrag)) != (FirstFrag | LastFrag);
3463 }
3464
3465 static inline void rtl8169_rx_csum(struct sk_buff *skb, struct RxDesc *desc)
3466 {
3467         u32 opts1 = le32_to_cpu(desc->opts1);
3468         u32 status = opts1 & RxProtoMask;
3469
3470         if (((status == RxProtoTCP) && !(opts1 & TCPFail)) ||
3471             ((status == RxProtoUDP) && !(opts1 & UDPFail)) ||
3472             ((status == RxProtoIP) && !(opts1 & IPFail)))
3473                 skb->ip_summed = CHECKSUM_UNNECESSARY;
3474         else
3475                 skb->ip_summed = CHECKSUM_NONE;
3476 }
3477
3478 static inline bool rtl8169_try_rx_copy(struct sk_buff **sk_buff,
3479                                        struct rtl8169_private *tp, int pkt_size,
3480                                        dma_addr_t addr)
3481 {
3482         struct sk_buff *skb;
3483         bool done = false;
3484
3485         if (pkt_size >= rx_copybreak)
3486                 goto out;
3487
3488         skb = netdev_alloc_skb(tp->dev, pkt_size + NET_IP_ALIGN);
3489         if (!skb)
3490                 goto out;
3491
3492         pci_dma_sync_single_for_cpu(tp->pci_dev, addr, pkt_size,
3493                                     PCI_DMA_FROMDEVICE);
3494         skb_reserve(skb, NET_IP_ALIGN);
3495         skb_copy_from_linear_data(*sk_buff, skb->data, pkt_size);
3496         *sk_buff = skb;
3497         done = true;
3498 out:
3499         return done;
3500 }
3501
3502 static int rtl8169_rx_interrupt(struct net_device *dev,
3503                                 struct rtl8169_private *tp,
3504                                 void __iomem *ioaddr, u32 budget)
3505 {
3506         unsigned int cur_rx, rx_left;
3507         unsigned int delta, count;
3508
3509         cur_rx = tp->cur_rx;
3510         rx_left = NUM_RX_DESC + tp->dirty_rx - cur_rx;
3511         rx_left = min(rx_left, budget);
3512
3513         for (; rx_left > 0; rx_left--, cur_rx++) {
3514                 unsigned int entry = cur_rx % NUM_RX_DESC;
3515                 struct RxDesc *desc = tp->RxDescArray + entry;
3516                 u32 status;
3517
3518                 rmb();
3519                 status = le32_to_cpu(desc->opts1);
3520
3521                 if (status & DescOwn)
3522                         break;
3523                 if (unlikely(status & RxRES)) {
3524                         if (netif_msg_rx_err(tp)) {
3525                                 printk(KERN_INFO
3526                                        "%s: Rx ERROR. status = %08x\n",
3527                                        dev->name, status);
3528                         }
3529                         dev->stats.rx_errors++;
3530                         if (status & (RxRWT | RxRUNT))
3531                                 dev->stats.rx_length_errors++;
3532                         if (status & RxCRC)
3533                                 dev->stats.rx_crc_errors++;
3534                         if (status & RxFOVF) {
3535                                 rtl8169_schedule_work(dev, rtl8169_reset_task);
3536                                 dev->stats.rx_fifo_errors++;
3537                         }
3538                         rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
3539                 } else {
3540                         struct sk_buff *skb = tp->Rx_skbuff[entry];
3541                         dma_addr_t addr = le64_to_cpu(desc->addr);
3542                         int pkt_size = (status & 0x00001FFF) - 4;
3543                         struct pci_dev *pdev = tp->pci_dev;
3544
3545                         /*
3546                          * The driver does not support incoming fragmented
3547                          * frames. They are seen as a symptom of over-mtu
3548                          * sized frames.
3549                          */
3550                         if (unlikely(rtl8169_fragmented_frame(status))) {
3551                                 dev->stats.rx_dropped++;
3552                                 dev->stats.rx_length_errors++;
3553                                 rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
3554                                 continue;
3555                         }
3556
3557                         rtl8169_rx_csum(skb, desc);
3558
3559                         if (rtl8169_try_rx_copy(&skb, tp, pkt_size, addr)) {
3560                                 pci_dma_sync_single_for_device(pdev, addr,
3561                                         pkt_size, PCI_DMA_FROMDEVICE);
3562                                 rtl8169_mark_to_asic(desc, tp->rx_buf_sz);
3563                         } else {
3564                                 pci_unmap_single(pdev, addr, tp->rx_buf_sz,
3565                                                  PCI_DMA_FROMDEVICE);
3566                                 tp->Rx_skbuff[entry] = NULL;
3567                         }
3568
3569                         skb_put(skb, pkt_size);
3570                         skb->protocol = eth_type_trans(skb, dev);
3571
3572                         if (rtl8169_rx_vlan_skb(tp, desc, skb) < 0)
3573                                 netif_receive_skb(skb);
3574
3575                         dev->last_rx = jiffies;
3576                         dev->stats.rx_bytes += pkt_size;
3577                         dev->stats.rx_packets++;
3578                 }
3579
3580                 /* Work around for AMD plateform. */
3581                 if ((desc->opts2 & cpu_to_le32(0xfffe000)) &&
3582                     (tp->mac_version == RTL_GIGA_MAC_VER_05)) {
3583                         desc->opts2 = 0;
3584                         cur_rx++;
3585                 }
3586         }
3587
3588         count = cur_rx - tp->cur_rx;
3589         tp->cur_rx = cur_rx;
3590
3591         delta = rtl8169_rx_fill(tp, dev, tp->dirty_rx, tp->cur_rx);
3592         if (!delta && count && netif_msg_intr(tp))
3593                 printk(KERN_INFO "%s: no Rx buffer allocated\n", dev->name);
3594         tp->dirty_rx += delta;
3595
3596         /*
3597          * FIXME: until there is periodic timer to try and refill the ring,
3598          * a temporary shortage may definitely kill the Rx process.
3599          * - disable the asic to try and avoid an overflow and kick it again
3600          *   after refill ?
3601          * - how do others driver handle this condition (Uh oh...).
3602          */
3603         if ((tp->dirty_rx + NUM_RX_DESC == tp->cur_rx) && netif_msg_intr(tp))
3604                 printk(KERN_EMERG "%s: Rx buffers exhausted\n", dev->name);
3605
3606         return count;
3607 }
3608
3609 static irqreturn_t rtl8169_interrupt(int irq, void *dev_instance)
3610 {
3611         struct net_device *dev = dev_instance;
3612         struct rtl8169_private *tp = netdev_priv(dev);
3613         void __iomem *ioaddr = tp->mmio_addr;
3614         int handled = 0;
3615         int status;
3616
3617         status = RTL_R16(IntrStatus);
3618
3619         /* hotplug/major error/no more work/shared irq */
3620         if ((status == 0xffff) || !status)
3621                 goto out;
3622
3623         handled = 1;
3624
3625         if (unlikely(!netif_running(dev))) {
3626                 rtl8169_asic_down(ioaddr);
3627                 goto out;
3628         }
3629
3630         status &= tp->intr_mask;
3631         RTL_W16(IntrStatus,
3632                 (status & RxFIFOOver) ? (status | RxOverflow) : status);
3633
3634         if (!(status & tp->intr_event))
3635                 goto out;
3636
3637         /* Work around for rx fifo overflow */
3638         if (unlikely(status & RxFIFOOver) &&
3639             (tp->mac_version == RTL_GIGA_MAC_VER_11)) {
3640                 netif_stop_queue(dev);
3641                 rtl8169_tx_timeout(dev);
3642                 goto out;
3643         }
3644
3645         if (unlikely(status & SYSErr)) {
3646                 rtl8169_pcierr_interrupt(dev);
3647                 goto out;
3648         }
3649
3650         if (status & LinkChg)
3651                 rtl8169_check_link_status(dev, tp, ioaddr);
3652
3653         if (status & tp->napi_event) {
3654                 RTL_W16(IntrMask, tp->intr_event & ~tp->napi_event);
3655                 tp->intr_mask = ~tp->napi_event;
3656
3657                 if (likely(netif_rx_schedule_prep(dev, &tp->napi)))
3658                         __netif_rx_schedule(dev, &tp->napi);
3659                 else if (netif_msg_intr(tp)) {
3660                         printk(KERN_INFO "%s: interrupt %04x in poll\n",
3661                                dev->name, status);
3662                 }
3663         }
3664 out:
3665         return IRQ_RETVAL(handled);
3666 }
3667
3668 static int rtl8169_poll(struct napi_struct *napi, int budget)
3669 {
3670         struct rtl8169_private *tp = container_of(napi, struct rtl8169_private, napi);
3671         struct net_device *dev = tp->dev;
3672         void __iomem *ioaddr = tp->mmio_addr;
3673         int work_done;
3674
3675         work_done = rtl8169_rx_interrupt(dev, tp, ioaddr, (u32) budget);
3676         rtl8169_tx_interrupt(dev, tp, ioaddr);
3677
3678         if (work_done < budget) {
3679                 netif_rx_complete(dev, napi);
3680                 tp->intr_mask = 0xffff;
3681                 /*
3682                  * 20040426: the barrier is not strictly required but the
3683                  * behavior of the irq handler could be less predictable
3684                  * without it. Btw, the lack of flush for the posted pci
3685                  * write is safe - FR
3686                  */
3687                 smp_wmb();
3688                 RTL_W16(IntrMask, tp->intr_event);
3689         }
3690
3691         return work_done;
3692 }
3693
3694 static void rtl8169_rx_missed(struct net_device *dev, void __iomem *ioaddr)
3695 {
3696         struct rtl8169_private *tp = netdev_priv(dev);
3697
3698         if (tp->mac_version > RTL_GIGA_MAC_VER_06)
3699                 return;
3700
3701         dev->stats.rx_missed_errors += (RTL_R32(RxMissed) & 0xffffff);
3702         RTL_W32(RxMissed, 0);
3703 }
3704
3705 static void rtl8169_down(struct net_device *dev)
3706 {
3707         struct rtl8169_private *tp = netdev_priv(dev);
3708         void __iomem *ioaddr = tp->mmio_addr;
3709         unsigned int intrmask;
3710
3711         rtl8169_delete_timer(dev);
3712
3713         netif_stop_queue(dev);
3714
3715         napi_disable(&tp->napi);
3716
3717 core_down:
3718         spin_lock_irq(&tp->lock);
3719
3720         rtl8169_asic_down(ioaddr);
3721
3722         rtl8169_rx_missed(dev, ioaddr);
3723
3724         spin_unlock_irq(&tp->lock);
3725
3726         synchronize_irq(dev->irq);
3727
3728         /* Give a racing hard_start_xmit a few cycles to complete. */
3729         synchronize_sched();  /* FIXME: should this be synchronize_irq()? */
3730
3731         /*
3732          * And now for the 50k$ question: are IRQ disabled or not ?
3733          *
3734          * Two paths lead here:
3735          * 1) dev->close
3736          *    -> netif_running() is available to sync the current code and the
3737          *       IRQ handler. See rtl8169_interrupt for details.
3738          * 2) dev->change_mtu
3739          *    -> rtl8169_poll can not be issued again and re-enable the
3740          *       interruptions. Let's simply issue the IRQ down sequence again.
3741          *
3742          * No loop if hotpluged or major error (0xffff).
3743          */
3744         intrmask = RTL_R16(IntrMask);
3745         if (intrmask && (intrmask != 0xffff))
3746                 goto core_down;
3747
3748         rtl8169_tx_clear(tp);
3749
3750         rtl8169_rx_clear(tp);
3751 }
3752
3753 static int rtl8169_close(struct net_device *dev)
3754 {
3755         struct rtl8169_private *tp = netdev_priv(dev);
3756         struct pci_dev *pdev = tp->pci_dev;
3757
3758         rtl8169_down(dev);
3759
3760         free_irq(dev->irq, dev);
3761
3762         pci_free_consistent(pdev, R8169_RX_RING_BYTES, tp->RxDescArray,
3763                             tp->RxPhyAddr);
3764         pci_free_consistent(pdev, R8169_TX_RING_BYTES, tp->TxDescArray,
3765                             tp->TxPhyAddr);
3766         tp->TxDescArray = NULL;
3767         tp->RxDescArray = NULL;
3768
3769         return 0;
3770 }
3771
3772 static void rtl_set_rx_mode(struct net_device *dev)
3773 {
3774         struct rtl8169_private *tp = netdev_priv(dev);
3775         void __iomem *ioaddr = tp->mmio_addr;
3776         unsigned long flags;
3777         u32 mc_filter[2];       /* Multicast hash filter */
3778         int rx_mode;
3779         u32 tmp = 0;
3780
3781         if (dev->flags & IFF_PROMISC) {
3782                 /* Unconditionally log net taps. */
3783                 if (netif_msg_link(tp)) {
3784                         printk(KERN_NOTICE "%s: Promiscuous mode enabled.\n",
3785                                dev->name);
3786                 }
3787                 rx_mode =
3788                     AcceptBroadcast | AcceptMulticast | AcceptMyPhys |
3789                     AcceptAllPhys;
3790                 mc_filter[1] = mc_filter[0] = 0xffffffff;
3791         } else if ((dev->mc_count > multicast_filter_limit)
3792                    || (dev->flags & IFF_ALLMULTI)) {
3793                 /* Too many to filter perfectly -- accept all multicasts. */
3794                 rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
3795                 mc_filter[1] = mc_filter[0] = 0xffffffff;
3796         } else {
3797                 struct dev_mc_list *mclist;
3798                 unsigned int i;
3799
3800                 rx_mode = AcceptBroadcast | AcceptMyPhys;
3801                 mc_filter[1] = mc_filter[0] = 0;
3802                 for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
3803                      i++, mclist = mclist->next) {
3804                         int bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26;
3805                         mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
3806                         rx_mode |= AcceptMulticast;
3807                 }
3808         }
3809
3810         spin_lock_irqsave(&tp->lock, flags);
3811
3812         tmp = rtl8169_rx_config | rx_mode |
3813               (RTL_R32(RxConfig) & rtl_chip_info[tp->chipset].RxConfigMask);
3814
3815         if (tp->mac_version > RTL_GIGA_MAC_VER_06) {
3816                 u32 data = mc_filter[0];
3817
3818                 mc_filter[0] = swab32(mc_filter[1]);
3819                 mc_filter[1] = swab32(data);
3820         }
3821
3822         RTL_W32(MAR0 + 0, mc_filter[0]);
3823         RTL_W32(MAR0 + 4, mc_filter[1]);
3824
3825         RTL_W32(RxConfig, tmp);
3826
3827         spin_unlock_irqrestore(&tp->lock, flags);
3828 }
3829
3830 /**
3831  *  rtl8169_get_stats - Get rtl8169 read/write statistics
3832  *  @dev: The Ethernet Device to get statistics for
3833  *
3834  *  Get TX/RX statistics for rtl8169
3835  */
3836 static struct net_device_stats *rtl8169_get_stats(struct net_device *dev)
3837 {
3838         struct rtl8169_private *tp = netdev_priv(dev);
3839         void __iomem *ioaddr = tp->mmio_addr;
3840         unsigned long flags;
3841
3842         if (netif_running(dev)) {
3843                 spin_lock_irqsave(&tp->lock, flags);
3844                 rtl8169_rx_missed(dev, ioaddr);
3845                 spin_unlock_irqrestore(&tp->lock, flags);
3846         }
3847
3848         return &dev->stats;
3849 }
3850
3851 #ifdef CONFIG_PM
3852
3853 static int rtl8169_suspend(struct pci_dev *pdev, pm_message_t state)
3854 {
3855         struct net_device *dev = pci_get_drvdata(pdev);
3856         struct rtl8169_private *tp = netdev_priv(dev);
3857         void __iomem *ioaddr = tp->mmio_addr;
3858
3859         if (!netif_running(dev))
3860                 goto out_pci_suspend;
3861
3862         netif_device_detach(dev);
3863         netif_stop_queue(dev);
3864
3865         spin_lock_irq(&tp->lock);
3866
3867         rtl8169_asic_down(ioaddr);
3868
3869         rtl8169_rx_missed(dev, ioaddr);
3870
3871         spin_unlock_irq(&tp->lock);
3872
3873 out_pci_suspend:
3874         pci_save_state(pdev);
3875         pci_enable_wake(pdev, pci_choose_state(pdev, state),
3876                 (tp->features & RTL_FEATURE_WOL) ? 1 : 0);
3877         pci_set_power_state(pdev, pci_choose_state(pdev, state));
3878
3879         return 0;
3880 }
3881
3882 static int rtl8169_resume(struct pci_dev *pdev)
3883 {
3884         struct net_device *dev = pci_get_drvdata(pdev);
3885
3886         pci_set_power_state(pdev, PCI_D0);
3887         pci_restore_state(pdev);
3888         pci_enable_wake(pdev, PCI_D0, 0);
3889
3890         if (!netif_running(dev))
3891                 goto out;
3892
3893         netif_device_attach(dev);
3894
3895         rtl8169_schedule_work(dev, rtl8169_reset_task);
3896 out:
3897         return 0;
3898 }
3899
3900 static void rtl_shutdown(struct pci_dev *pdev)
3901 {
3902         rtl8169_suspend(pdev, PMSG_SUSPEND);
3903 }
3904
3905 #endif /* CONFIG_PM */
3906
3907 static struct pci_driver rtl8169_pci_driver = {
3908         .name           = MODULENAME,
3909         .id_table       = rtl8169_pci_tbl,
3910         .probe          = rtl8169_init_one,
3911         .remove         = __devexit_p(rtl8169_remove_one),
3912 #ifdef CONFIG_PM
3913         .suspend        = rtl8169_suspend,
3914         .resume         = rtl8169_resume,
3915         .shutdown       = rtl_shutdown,
3916 #endif
3917 };
3918
3919 static int __init rtl8169_init_module(void)
3920 {
3921         return pci_register_driver(&rtl8169_pci_driver);
3922 }
3923
3924 static void __exit rtl8169_cleanup_module(void)
3925 {
3926         pci_unregister_driver(&rtl8169_pci_driver);
3927 }
3928
3929 module_init(rtl8169_init_module);
3930 module_exit(rtl8169_cleanup_module);